ANSYS CFX tutorials.pdf - [PDF Document] (2023)

ANSYS CFXTutorials

ANSYS CFX Release 11.0

December 2006

ANSYS, Inc.

Southpointe

275 Technology Drive

Canonsburg, PA 15317

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Page vANSYS CFX Tutorials

Table of Contents

Copyright and Trademark Information

Disclaimer Notice

U.S. Government Rights

Third-Party Software

Introduction to theANSYS CFX Tutorials

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Setting the Working Directory . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 1

Changing the Display Colors . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . 2

Tutorial 1:Simulating Flow in a Static Mixer Using CFX inStandalone Mode

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Tutorial 1 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . 5

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 6

Obtaining a Solution Using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . .12

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .15

Tutorial 1a:Simulating Flow in a Static Mixer UsingWorkbench

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Tutorial 1a Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . .32

Table of Contents: Tutorial 2: Flow in a Static Mixer (RefinedMesh)

Page vi ANSYS CFX Tutorials

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .33

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .34

Obtaining a Solution Using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . .41

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .43

Tutorial 2:Flow in a Static Mixer(Refined Mesh)

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Tutorial 2 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .60

Defining a Simulation using General Mode in ANSYS CFX-Pre . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .61

Obtaining a Solution Using Interpolation with ANSYS CFX-Solver .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .66

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .68

Tutorial 3:Flow in a Process Injection Mixing Pipe

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Tutorial 3 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .78

Defining a Simulation using General Mode in ANSYS CFX-Pre . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .79

Obtaining a Solution Using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . .87

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .88

Tutorial 4:Flow from a Circular Vent

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Tutorial 4 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . .94

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .95

Defining a Steady-State Simulation in ANSYS CFX-Pre . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . .95

Obtaining a Solution to the Steady-State Problem . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . .99

Defining a Transient Simulation in ANSYS CFX-Pre. . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 100

Obtaining a Solution to the Transient Problem . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 104

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 105

Tutorial 5:Flow Around a Blunt Body

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Tutorial 5 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 109

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 111

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 111

Table of Contents: Tutorial 6: Buoyant Flow in a PartitionedCavity

ANSYS CFX Tutorials Page vii

Obtaining a Solution Using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 116

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 119

Tutorial 6:Buoyant Flow in a Partitioned Cavity

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Tutorial 6 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 128

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 128

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 129

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 134

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 135

Tutorial 7:Free Surface Flow Over a Bump

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 139

Tutorial 7 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 139

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 140

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 141

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 148

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 149

Using a Supercritical Outlet Condition . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . 154

Tutorial 8:Supersonic Flow Over a Wing

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Tutorial 8 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 155

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 157

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 157

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 162

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 162

Tutorial 9:Flow Through a Butterfly Valve

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

Tutorial 9 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 165

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 166

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 167

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 180

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 180

Tutorial 10:

Table of Contents: Tutorial 11: Non-Newtonian Fluid Flow in anAnnulus

Page viii ANSYS CFX Tutorials

Flow in a Catalytic Converter

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Tutorial 10 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 185

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 186

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 187

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 193

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 194

Tutorial 11:Non-Newtonian Fluid Flow in an Annulus

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

Tutorial 11 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 200

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 201

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 201

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 205

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 206

Tutorial 12:Flow in an Axial Rotor/Stator

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 207

Tutorial 12 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 208

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 209

Defining a Frozen Rotor Simulation in ANSYS CFX-Pre . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 210

Obtaining a Solution to the Frozen Rotor Model . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 214

Viewing the Frozen Rotor Results in ANSYS CFX-Post . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 215

Setting up a Transient Rotor-Stator Calculation. . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 216

Obtaining a Solution to the Transient Rotor-Stator Model. . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . 219

Viewing the Transient Rotor-Stator Results in ANSYS CFX-Post . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 220

Tutorial 13:Reacting Flow in a Mixing Tube

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 223

Tutorial 13 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 223

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 224

Outline of the Process . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . 224

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 225

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 237

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 237

Tutorial 14:

Table of Contents: Tutorial 15: Multiphase Flow in MixingVessel

ANSYS CFX Tutorials Page ix

Conjugate Heat Transfer in a Heating Coil

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 239

Tutorial 14 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 240

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 241

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 241

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 246

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 246

Exporting the Results to ANSYS . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . 247

Tutorial 15:Multiphase Flow in Mixing Vessel

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 251

Tutorial 15 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 252

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 253

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 253

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 265

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 265

Tutorial 16:Gas-Liquid Flow in an Airlift Reactor

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Tutorial 16 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 270

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 270

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 271

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 277

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 278

Additional Fine Mesh Simulation Results . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 280

Tutorial 17:Air Conditioning Simulation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Tutorial 17 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 284

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 285

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 285

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 295

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 295

Tutorial 18:Combustion and Radiation in a Can Combustor

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 299

Table of Contents: Tutorial 19: Cavitation Around aHydrofoil

Page x ANSYS CFX Tutorials

Tutorial 18 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 300

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 301

Using Eddy Dissipation and P1 Models . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 301

Defining a Simulation in ANSYS CFX-Pre . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 302

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 307

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 308

Laminar Flamelet and Discrete Transfer Models . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 311

Further Postprocessing . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 316

Tutorial 19:Cavitation Around a Hydrofoil

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 317

Tutorial 19 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 318

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 319

Creating an Initial Simulation . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . 319

Obtaining an Initial Solution using ANSYS CFX-Solver Manager . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 323

Viewing the Results of the Initial Simulation . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 324

Preparing a Simulation with Cavitation. . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . 326

Obtaining a Cavitation Solution using ANSYS CFX-Solver Manager .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 328

Viewing the Results of the Cavitation Simulation . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 328

Tutorial 20:Fluid Structure Interaction and Mesh Deformation

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 331

Tutorial 20 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 332

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 333

Using CEL Expressions to Govern Mesh Deformation . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . 334

Using a Junction Box Routine to Govern Mesh Deformation . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 343

Tutorial 21:Oscillating Plate with Two-Way Fluid-StructureInteraction

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 353

Tutorial 21 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 354

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 354

Setting up the Solid Physics in Simulation (ANSYS Workbench) . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 355

Setting up the Fluid Physics and ANSYS Multi-field Settings inANSYS CFX-Pre. . . . . . . . . . . . . . . . . . . . . . . . .358

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 364

Viewing Results in ANSYS CFX-Post . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . 365

Tutorial 22:

Table of Contents: Tutorial 23: Aerodynamic & StructuralPerformance of a Centrifugal Compressor

ANSYS CFX Tutorials Page xi

Optimizing Flow in a Static Mixer

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 369

Tutorial 22 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 370

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 370

Creating the Project . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 371

Creating the Geometry . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . 372

Creating the Mesh. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 377

Overview of ANSYS CFX-Pre . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . 380

Setting the Output Parameter in ANSYS CFX-Post . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 386

Running Design Studies in DesignXplorer . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 387

Tutorial 23:Aerodynamic & Structural Performance of aCentrifugal Compressor

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 395

Tutorial 23 Features . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 396

Overview of the Problem to Solve. . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 397

Reviewing the Centrifugal Compressor Design . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . 397

Creating the Mesh in ANSYS TurboGrid . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 398

Defining the Aerodynamic Simulation in ANSYS CFX-Pre . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 401

Obtaining a Solution using ANSYS CFX-Solver Manager . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 403

Viewing the Results in ANSYS CFX-Post . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . 404

Importing Geometry into DesignModeler . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 405

Simulating Structural Stresses Due to Pressure Loads . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 406

Simulating Structural Stresses Due to Rotation . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 407

Table of Contents: Tutorial 23: Aerodynamic & StructuralPerformance of a Centrifugal Compressor

Page xii ANSYS CFX Tutorials

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ANSYS CFX Tutorials

Introduction to theANSYS CFX Tutorials

Overview

These tutorials are designed to introduce general techniquesused in ANSYS CFX and

provide tips on advanced modeling.

Earlier tutorials introduce general principles used in ANSYSCFX, including setting up the

physical models, running ANSYS CFX-Solver and visualizing theresults. The remaining

tutorials highlight specialized features of ANSYS CFX.

Files required to complete each tutorial is listed in theintroduction to the tutorial, and

located in /examples, where is the installation directory.

Setting the Working Directory

One of the first things you must do when using ANSYS CFX is toset a working directory. The

working directory is the default location for loading and savingfiles for a particular session

or project.

The working directory is set according to how you run ANSYSCFX:

Workbench

Set the working directory by saving a project file.

Standalone

Set the working directory by entering it in CFX Launcher.

Introduction to the ANSYS CFX Tutorials: Changing the DisplayColors

Page 2 ANSYS CFX Tutorials. ANSYS CFX Release 11.0. 1996-2006ANSYS Europe, Ltd. All rights reserved.Contains proprietary andconfidential information of ANSYS, Inc. and its subsidiaries andaffiliates.

Changing the Display Colors

If viewing objects in ANSYS CFX becomes difficult due tocontrast with the background, the

colors can be altered for improved viewing. The color optionsare set in different places,

depending on how you run ANSYS CFX, as follows:

In standalone mode (i.e., after using CFX Launcher to launchANSYS CFX-Pre or ANSYSCFX-Post):

a. Select Edit > Options.

The Options dialog box appears.

b. Adjust the color settings under CFX-Pre> Viewer (for ANSYSCFX-Pre) or CFX-Post> Viewer (for ANSYS CFX-Post).

c. Click OK.

In ANSYS Workbench:

a. Select Tools > Options from the Project page.

b. Adjust the color settings under Common Settings > GraphicsStyle.

c. Click OK.

Page 3ANSYS CFX Release 11.0. 1996-2006 ANSYS Europe, Ltd. Allrights reserved.Contains proprietary and confidential informationof ANSYS, Inc. and its subsidiaries and affiliates.

ANSYS CFX Tutorials

Tutorial 1:Simulating Flow in a StaticMixer Using CFX inStandaloneMode

Introduction

This tutorial simulates a static mixer consisting of two inletpipes delivering water into a

mixing vessel; the water exits through an outlet pipe. A generalworkflow is established for

analyzing the flow of fluid into and out of a mixer.

This tutorial includes:

Before You Begin (p. 4)

Tutorial 1 Features (p. 4)

Overview of the Problem to Solve (p. 5)

Defining a Simulation in ANSYS CFX-Pre (p. 6)

Obtaining a Solution Using ANSYS CFX-Solver Manager (p. 12)

Viewing the Results in ANSYS CFX-Post (p. 15)

If this is the first tutorial you are working with, it isimportant to review the following topics

before beginning:

Setting the Working Directory (p. 1)

Changing the Display Colors (p. 2)

To learn how to perform these tasks in Workbench, see Tutorial1a: Simulating Flow in a

Static Mixer Using Workbench (p. 31 in "ANSYS CFXTutorials").

Tutorial 1: Simulating Flow in a Static Mixer Using CFX inStandalone Mode: Before You Begin

Page 4 ANSYS CFX Tutorials. ANSYS CFX Release 11.0. 1996-2006ANSYS Europe, Ltd. All rights reserved.Contains proprietary andconfidential information of ANSYS, Inc. and its subsidiaries andaffiliates.

Before You Begin

Create a working directory for your files. Once this is done,copy the sample files used in this

tutorial to your working directory from the installation folderfor your software

(/examples/ (for example, C:\ProgramFiles\ANSYSInc\v110\CFX\examples)) to avoid overwriting sourcefiles provided with yourinstallation. If you plan to use a sessionfile, please refer to Playing a Session File (p. 7).

Sample files used by this tutorial are:

StaticMixerMesh.gtm

StaticMixer.pre

Tutorial 1 Features

This tutorial addresses the following features of ANSYS CFX.

In this tutorial you will learn about:

Using Quick Setup mode in ANSYS CFX-Pre to set up a problem.

Modifying the outline plot in ANSYS CFX-Post.

Using streamlines in ANSYS CFX-Post to trace the flow field froma point.

Viewing temperature using colored planes and contours in ANSYSCFX-Post.

Creating an animation and saving it to an MPEG file.

Component Feature Details

ANSYS CFX-Pre User Mode Quick Setup Wizard

Simulation Type Steady State

Fluid Type General Fluid

Domain Type Single Domain

Turbulence Model k-Epsilon

Heat Transfer Thermal Energy

Boundary Conditions Inlet (Subsonic)

Outlet (Subsonic)

Wall: No-Slip

Wall: Adiabatic

Timestep Physical Time Scale

ANSYS CFX-Post Plots Animation

Contour

Outline Plot (Wireframe)

Point

Slice Plane

Streamline

Tutorial 1: Simulating Flow in a Static Mixer Using CFX inStandalone Mode: Overview of the Problem to Solve

ANSYS CFX Tutorials. ANSYS CFX Release 11.0. 1996-2006 ANSYSEurope, Ltd. All rights reserved. Page 5Contains proprietary andconfidential information of ANSYS, Inc. and its subsidiaries andaffiliates.

Overview of the Problem to Solve

This tutorial simulates a static mixer consisting of two inletpipes delivering water into a

mixing vessel; the water exits through an outlet pipe. A generalworkflow is established for

analyzing the flow of fluid into and out of a mixer.

Water enters through both pipes at the same rate but atdifferent temperatures. The first

entry is at a rate of 2 m/s and a temperature of 315 K and thesecond entry is at a rate of 2

m/s at a temperature of 285 K. The radius of the mixer is 2m.

Your goal in this tutorial is to understand how to use ANSYS CFXto determine the speed and

temperature of the water when it exits the static mixer.

Figure 1 Static Mixer with 2 Inlet Pipes and 1 Outlet Pipe

2 m/s285 K

2 m/s315 K

r=2m

Tutorial 1: Simulating Flow in a Static Mixer Using CFX inStandalone Mode: Defining a Simulation in ANSYS CFX-Pre

Page 6 ANSYS CFX Tutorials. ANSYS CFX Release 11.0. 1996-2006ANSYS Europe, Ltd. All rights reserved.Contains proprietary andconfidential information of ANSYS, Inc. and its subsidiaries andaffiliates.

Defining a Simulation in ANSYS CFX-Pre

Because you are starting with an existing mesh, you canimmediately use ANSYS CFX-Pre to

define the simulation. This is how ANSYS CFX-Pre will look withthe imported mesh:

In the image above, the left pane of ANSYS CFX-Pre displays theOutline . When you

double-click on items in the Outline, the Outline editor opensand can be used to create,

modify, and view objects.

Note: In this documentation, the details view can also bereferenced by the name of theobject being edited, followed by theword details view (for example, if you double-clickthe Wireframeobject, the Wireframe details view appears).

Synopsis of Quick Setup Mode

Quick Setup mode provides a simple wizardlike interface forsetting up simple cases. This

is useful for getting familiar with the basic elements of a CFDproblem setup. This section

describes using Quick Setup mode to develop a simulation inANSYS CFX-Pre.

Workflow Overview

This tutorial follows the general workflow for Quick Setupmode:

1. Creating a New Simulation (p. 7)

2. Setting the Physics Definition (p. 7)

3. Importing a Mesh (p. 7)

4. Defining Model Data (p. 9)

5. Defining Boundaries (p. 9)

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6. Setting Boundary Data (p. 9)

7. Setting Flow Specification (p. 9)

8. Setting Temperature Specification (p. 10)

9. Reviewing the Boundary Condition Definitions (p. 10)

10. Creating the Second Inlet Boundary Definition (p. 10)

11. Creating the Outlet Boundary Definition (p. 10)

12. Moving to General Mode (p. 11)

13. Writing the Solver (.def) File (p. 11)

Playing aSession File

If you want to skip past these instructions and have ANSYSCFX-Pre set up the simulation

automatically, you can select Session > Play Tutorial fromthe menu in ANSYS CFX-Pre,

then run the appropriate session file. For details, see Playingthe Session File and Starting

ANSYS CFX-Solver Manager (p. 12). After you have played thesession file, proceed to

Obtaining a Solution Using ANSYS CFX-Solver Manager (p. 12).

Creating a New Simulation

Before importing and working with a mesh, a simulation needs tobe started using Quick

Setup mode.

Procedure 1. If required, launch ANSYS CFX-Pre.

2. Select File > New Simulation.

The New Simulation File dialog box is displayed.

3. Select Quick Setup and click OK.

Note: If this is the first time you are running this software, amessage box will appearnotifying you that automatic generation ofthe default domain is active. To avoid seeing thismessage againuncheck Show This Message Again.

4. Select File > Save Simulation As.

5. Under File name, type: StaticMixer

6. Click Save.

Setting the Physics Definition

You need to specify the fluids used in a simulation. A varietyof fluids are already defined as

library materials. For this tutorial you will use a preparedfluid, Water, which is defined to be

water at 25C.

Procedure 1. Ensure that Simulation Definition is displayed atthe top of the details view.

2. Under Fluid select Water.

Importing a Mesh

At least one mesh must be imported before physics areapplied.

Procedure 1. In Simulation Definition, under Mesh File, clickBrowse .

The Import Mesh dialog box appears.

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2. Under File type, select CFX Mesh (*gtm *cfx).3. From yourworking directory, select StaticMixerMesh.gtm.

4. Click Open.

The mesh loads.

5. Click Next.

Using the Viewer

Now that the mesh is loaded, take a moment to explore how youcan use the viewer toolbar

to zoom in or out and to rotate the object in the viewer.

Using the ZoomTools

There are several icons available for controlling the level ofzoom in the viewer.

1. Click Zoom Box

2. Click and drag a rectangular box over the geometry.

3. Release the mouse button to zoom in on the selection.

The geometry zoom changes to display the selection at a greaterresolution.

4. Click Fit View to re-center and re-scale the geometry.

Rotating thegeometry

If you need to rotate an object or to view it from a new angle,you can use the viewer toolbar.

1. Click Rotate on the viewer toolbar.

2. Click and drag within the geometry repeatedly to test therotation of the geometry.

The geometry rotates based on the direction of movement.

Notice how the mouse cursor changes depending on where you arein the viewer:

3. Right-click a blank area in the viewer and select PredefinedCamera > ViewTowards-X).

4. Right-click a blank area in the viewer and select PredefinedCamera > Isometric View(Z Up).

A clearer view of the mesh is displayed.

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Defining Model Data

You need to define the type of flow and the physical models touse in the fluid domain.

You will specify the flow as steady state with turbulence andheat transfer. Turbulence is

modeled using the - turbulence model and heat transfer using thethermal energy

model. The - turbulence model is a commonly used model and issuitable for a wide

range of applications. The thermal energy model neglects highspeed energy effects and is

therefore suitable for low speed flow applications.

Procedure 1. Ensure that Physics Definition is displayed.

2. Under Model Data, set Reference Pressure to 1 [atm].All otherpressure settings are relative to this reference pressure.

3. Set Heat Transfer to Thermal Energy.

4. Set Turbulence to k-Epsilon.

5. Click Next.

Defining Boundaries

The CFD model requires the definition of conditions on theboundaries of the domain.

Procedure 1. Ensure that Boundary Definition is displayed.

2. Delete Inlet and Outlet from the list by right-clicking eachand selecting Delete.

3. Right-click in the blank area where Inlet and Outlet werelisted, then select New.

4. Set Name to in1.

5. Click OK.

The boundary is created and, when selected, properties relatedto the boundary are

displayed.

Setting Boundary Data

Once boundaries are created, you need to create associated data.Based on Figure 1, you will

define the first inlet boundary conditions velocity andtemperature.

Procedure 1. Ensure that Boundary Data is displayed.

2. Set Boundary Type to Inlet.

3. Set Location to in1.

Setting Flow Specification

Once boundary data is defined, the boundary needs to have theflow specification assigned.

Procedure 1. Ensure that Flow Specification is displayed.

2. Set Option to Normal Speed.

3. Set Normal Speed to 2 [m s^-1].

k

k

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Setting Temperature Specification

Once flow specification is defined, the boundary needs to havetemperature assigned.

Procedure 1. Ensure that Temperature Specification isdisplayed.

2. Set Static Temperature to 315 [K].

Reviewing the Boundary Condition Definitions

Defining the boundary condition for in1 required several steps.Here the settings are

reviewed for accuracy.

Based on Figure 1, the first inlet boundary condition consistsof a velocity of 2 m/s and a

temperature of 315 K at one of the side inlets.

Procedure 1. Review the boundary in1 settings for accuracy. Theyshould be as follows:

Creating the Second Inlet Boundary Definition

Based on Figure 1, you know the second inlet boundary conditionconsists of a velocity of 2

m/s and a temperature of 285 K at one of the side inlets. Youwill define that now.

Procedure 1. Under Boundary Definition, right-click in theselector area and select New.

2. Create a new boundary named in2 with these settings:

Creating the Outlet Boundary Definition

Now that the second inlet boundary has been created, the sameconcepts can be applied to

building the outlet boundary.

1. Create a new boundary named out with these settings:

Tab Setting Value

Boundary Data Boundary Type Inlet

Location in1

Flow Specification Option Normal Speed

Normal Speed 2 [m s^-1]

Temperature Specification Static Temperature 315 [K]

Tab Setting Value

Boundary Data Boundary Type Inlet

Location in2

Flow Specification Option Normal Speed

Normal Speed 2 [m s^-1]

Temperature Specification Static Temperature 285 [K]

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2. Click Next.

Moving to General Mode

There are no further boundary conditions that need to be set.All 2D exterior regions that

have not been assigned to a boundary condition are automaticallyassigned to the default

boundary condition.

Procedure 1. Set Operation to Enter General Mode and clickFinish.

The three boundary conditions are displayed in the viewer assets of arrows at the

boundary surfaces. Inlet boundary arrows are directed into thedomain. Outlet

boundary arrows are directed out of the domain.

Setting Solver Control

Solver Control parameters control aspects of the numericalsolution generation process.

While an upwind advection scheme is less accurate than otheradvection schemes, it is also

more robust. This advection scheme is suitable for obtaining aninitial set of results, but in

general should not be used to obtain final accurate results.

The time scale can be calculated automatically by the solver orset manually. TheAutomatic

option tends to be conservative, leading to reliable, but oftenslow, convergence. It is often

possible to accelerate convergence by applying a time scalefactor or by choosing a manual

value that is more aggressive than the Automatic option. In thistutorial, you will select a

physical time scale, leading to convergence that is twice asfast as the Automatic option.

Procedure 1. Click Solver Control .

2. On the Basic Settings tab, set Advection Scheme > Optionto Upwind.

3. Set Convergence Control > Fluid Timescale Control >Timescale Control toPhysical Timescale and set the physicaltimescale value to 2 [s].

4. Click OK.

Writing the Solver (.def) File

The simulation file, StaticMixer.cfx, contains the simulationdefinition in a format that

can be loaded by ANSYS CFX-Pre, allowing you to complete (ifapplicable), restore, and

modify the simulation definition. The simulation file differsfrom the definition file in that it

can be saved at any time while defining the simulation.

Procedure 1. Click Write Solver File .

Tab Setting Value

Boundary Data Boundary Type Outlet

Location out

Flow Specification Option Average Static Pressure

Relative Pressure 0 [Pa]

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The Write Solver File dialog box is displayed.

2. Set File name to StaticMixer.def.

3. Ensure that Start Solver Manager is selected from the dropdown menu located inthe top-right corner of the dialog box.

4. Select Quit ANSYS CFX-Pre.

This forces standalone ANSYS CFX-Pre to close after thedefinition file has been written.

5. Click Save.

6. If you are notified the file already exists, clickOverwrite.

This file is provided in the tutorial directory and may exist inyour tutorial folder if youhave copied it there.

7. If prompted, click Yes or Save & Quit to saveStaticMixer.cfx.

The definition file (StaticMixer.def) and the simulation file(StaticMixer.cfx) arecreated. ANSYS CFX-Solver Managerautomatically starts and the definition file is set inthe DefineRun dialog box.

8. Proceed to Obtaining a Solution Using ANSYS CFX-SolverManager (p. 12).

Playing the Session File and Starting ANSYS CFX-SolverManager

Note: This task is required only if you are starting here withthe session file that was providedin the examples directory. If youhave performed all the tasks in the previous steps, proceeddirectlyto Obtaining a Solution Using ANSYS CFX-Solver Manager (p. 12).

Events in ANSYS CFX-Pre can be recorded to a session file andthen played back at a later

date to drive ANSYS CFX-Pre. Session files have been created foreach tutorial so that the

problems can be set up rapidly in ANSYS CFX-Pre, if desired.

Procedure 1. If required, launch ANSYS CFX-Pre.

2. Select Session > Play Tutorial.

3. Select StaticMixer.pre.

4. Click Open.

A definition file is written.

5. Select File > Quit.

6. Launch the ANSYS CFX-Solver Manager from CFX Launcher.

7. After the ANSYS CFX-Solver starts, select File > DefineRun.

8. Under Definition File, click Browse .

9. Select StaticMixer.def, located in the working directory.

10. Proceed to Obtaining a Solution Using ANSYS CFX-SolverManager (p. 12).

Obtaining a Solution Using ANSYS CFX-Solver Manager

ANSYS CFX-Solver Manager has a visual interface that displays avariety of results and should

be used when plotted data needs to be viewed during problemsolving.

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Two windows are displayed when ANSYS CFX-Solver Manager runs.There is an adjustable

split between the windows, which is oriented either horizontallyor vertically depending on

the aspect ratio of the entire ANSYS CFX-Solver Manager window(also adjustable).

One window shows the convergence history plots and the otherdisplays text output from

ANSYS CFX-Solver.

The text lists physical properties, boundary conditions andvarious other parameters used

or calculated in creating the model. All the text is written tothe output file automatically (in

this case, StaticMixer_001.out).

Start the Run

The Define Run dialog box allows configuration of a run forprocessing by ANSYS

CFX-Solver.

When ANSYS CFX-Solver Manager is launched automatically fromANSYS CFX-Pre, all of the

information required to perform a new serial run (on a singleprocessor) is entered

automatically. You do not need to alter the information in theDefine Run dialog box. This

is a very quick way to launch into ANSYS CFX-Solver withouthaving to define settings and

values.

Procedure 1. Ensure that the Define Run dialog box isdisplayed.

2. Click Start Run.

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ANSYS CFX-Solver launches and a split screen appears anddisplays the results of the rungraphically and as text. The panescontinue to build as ANSYS CFX-Solver Manageroperates.

Note: Once the second iteration appears, data begins to plot.Plotting may take a long time

depending on the amount of data to process. Let the processrun.

Move from ANSYS CFX-Solver to ANSYS CFX-Post

Once ANSYS CFX-Solver has finished, you can use ANSYS CFX-Postto review the finished

results.

Procedure 1. When ANSYS CFX-Solver is finished, click Yes topost-process the results.

After a short pause, ANSYS CFX-Post starts and ANSYS CFX-SolverManager closes.

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Viewing the Results in ANSYS CFX-Post

When ANSYS CFX-Post starts, the viewer and Outline workspace aredisplayed.

The viewer displays an outline of the geometry and other graphicobjects. You can use the

mouse or the toolbar icons to manipulate the view, exactly as inANSYS CFX-Pre.

Workflow Overview

This tutorial describes the following workflow for viewingresults in ANSYS CFX-Post:

1. Setting the Edge Angle for a Wireframe Object (p. 16)

2. Creating a Point for the Origin of the Streamline (p. 17)

3. Creating a Streamline Originating from a Point (p. 18)

4. Rearranging the Point (p. 19)

5. Configuring a Default Legend (p. 19)

6. Creating a Slice Plane (p. 20)

7. Defining Slice Plane Geometry (p. 21)

8. Configuring Slice Plane Views (p. 21)

9. Rendering Slice Planes (p. 22)

10. Coloring the Slice Plane (p. 23)

11. Moving the Slice Plane (p. 23)

12. Adding Contours (p. 24)

13. Working with Animations (p. 25)

14. Showing the Animation Dialog Box (p. 25)

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15. Creating the First Keyframe (p. 26)

16. Creating the Second Keyframe (p. 26)

17. Viewing the Animation (p. 27)

18. Modifying the Animation (p. 28)

19. Saving to MPEG (p. 29)

Setting the Edge Angle for a Wireframe Object

The outline of the geometry is called the wireframe or outlineplot.

By default, ANSYS CFX-Post displays only some of the surfacemesh. This sometimes means

that when you first load your results file, the geometry outlineis not displayed clearly. You

can control the amount of the surface mesh shown by editing theWireframe object listed

in the Outline.

The check boxes next to each object name in the Outline controlthe visibility of each

object. Currently only the Wireframe and Default Legend objectshave visibility selected.

The edge angle determines how much of the surface mesh isvisible. If the angle between

two adjacent faces is greater than the edge angle, then thatedge is drawn. If the edge angle

is set to 0, the entire surface mesh is drawn. If the edge angleis large, then only the most

significant corner edges of the geometry are drawn.

For this geometry, a setting of approximately 15 lets you viewthe model location without

displaying an excessive amount of the surface mesh.

In this module you can also modify the zoom settings and view ofthe wireframe.

Procedure 1. In the Outline, under User Locations and Plots,double-click Wireframe.

Tip: While it is not necessary to change the view to set theangle, do so to explore thepractical uses of this feature.

2. Right-click on a blank area anywhere in the viewer, selectPredefined Camera from theshortcut menu and select Isometric View(Z up).

3. In the Wireframe details view, under Definition, click in theEdge Angle box.

An embedded slider is displayed.

4. Type a value of 10 [degree].5. Click Apply to update theobject with the new setting.

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Notice that more surface mesh is displayed.

6. Drag the embedded slider to set the Edge Angle value toapproximately 45 [degree].7. Click Apply to update the object withthe new setting.

Less of the outline of the geometry is displayed.

8. Type a value of 15 [degree].9. Click Apply to update theobject with the new setting.

10. Right-click on a blank area anywhere in the viewer, selectPredefined Camera from the

shortcut menu and select View Towards -X.

Creating a Point for the Origin of the Streamline

A streamline is the path that a particle of zero mass wouldfollow through the domain.

Procedure 1. Select Insert > Location > Point from themain menu.

You can also use the toolbars to create a variety of objects.Later modules and tutorialsexplore this further.

2. Click OK.

This accepts the default name.

3. Under Definition, ensure that Method is set to XYZ.

4. Under Point, enter the following coordinates: -1, -1, 1.

This is a point near the first inlet.

5. Click Apply.

The point appears as a symbol in the viewer as a crosshairsymbol.

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Creating a Streamline Originating from a Point

Where applicable, streamlines can trace the flow directionforwards (downstream) and/or

backwards (upstream).

Procedure 1. From the main menu, select Insert >Streamline.

You can also use the toolbars to create a variety of objects.Later modules and tutorialswill explore this further.

2. Click OK.

This accepts the default name.

3. Under Definition, in Start From, ensure that Point 1 isset.

Tip: To create streamlines originating from more than onelocation, click the ellipsis iconto the right of the Start Frombox. This displays the Location Selector dialog box,where you canuse the and keys to pick multiple locators.

4. Click the Color tab.

5. Set Mode to Variable.

6. Set Variable to Total Temperature.

7. Set Range to Local.

8. Click Apply.

The streamline shows the path of a zero mass particle from Point1. The temperatureis initially high near the hot inlet, but as thefluid mixes the temperature drops.

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Rearranging the Point

Once created, a point can be rearranged manually or by settingspecific coordinates.

Tip: In this module, you may choose to display various views andzooms from thePredefined Camera option in the shortcut menu (suchas Isometric View (Z up) or

View Towards -X) and by using Zoom Box if you prefer to changethe display.

Procedure 1. In Outline, under User Locations and Plotsdouble-click Point 1.

Properties for the selected user location are displayed.

2. Under Point, set these coordinates: -1, -2.9, 1.

3. Click Apply.

The point is moved and the streamline redrawn.

4. In the selection tools, click Single Select.

While in this mode, the normal behavior of the left mouse buttonis disabled.

5. In the viewer, drag Point 1 (appears as a yellow additionsign) to a new location withinthe mixer.

The point position is updated in the details view and thestreamline is redrawn at thenew location. The point moves normal inrelation to the viewing direction.

6. Click Rotate .

Tip: You can also click in the viewer area, and press the spacebar to toggle betweenSelect and Viewing Mode. A way to pick objectsfrom Viewing Mode is to hold down + while clicking on an objectwith the left mouse button.

7. Under Point, reset these coordinates: -1, -1, 1.

8. Click Apply.

The point appears at its original location.

9. Right-click a blank area in the viewer and select PredefinedCamera > View Towards

-X.

Configuring a Default Legend

You can modify the appearance of the default legend.

The default legend appears whenever a plot is created that iscolored by a variable. The

streamline color is based on temperature; therefore, the legendshows the temperature

range. The color pattern on the legends color bar is banded inaccordance with the bands

in the plot1.

1. An exception occurs when one or more bands in a contour plotrepresent values beyond thelegends range. In this case, such bandsare colored using a color that is extrapolated slightlypast therange of colors shown in the legend. This can happen only when auser-specifiedrange is used for the legend.

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The default legend displays values for the last eligible plotthat was opened in the details

view. To maintain a legend definition during an ANSYS CFX-Postsession, you can create a

new legend by clicking Legend .

Because there are many settings that can be customized for thelegend, this module allows

you the freedom to experiment with them. In the last steps youwill set up a legend, based

on the default legend, with a minor modification to theposition.

Tip: When editing values, you can restore the values that werepresent when you beganediting by clicking Reset. To restore thefactory-default values, click Default.

Procedure 1. Double click Default Legend View 1.

The Definition tab of the default legend is displayed.

2. Apply the following settings

3. Click Apply.

The appearance and position of the legend changes based on thesettings specified.

4. Modify various settings in Definition and click Apply aftereach change.

5. Select Appearance.

6. Modify a variety of settings in the Appearance and clickApply after each change.

7. Click Defaults.

8. Click Apply.

9. Under Outline, in User Locations and Plots, clear the checkboxes for Point 1 andStreamline 1.

Since both are no longer visible, the associated legend nolonger appears.

Creating a Slice Plane

Defining a slice plane allows you to obtain a crosssection ofthe geometry.

In ANSYS CFX-Post you often view results by coloring a graphicobject. The graphic object

could be an isosurface, a vector plot, or in this case, a plane.The object can be a fixed color

or it can vary based on the value of a variable.

You already have some objects defined by default (listed in theOutline). You can view

results on the boundaries of the static mixer by coloring eachboundary object by a variable.

To view results within the geometry (that is, on non-defaultlocators), you will create new

objects.

You can use the following methods to define a plane:

Three Points: creates a plane from three specified points.

Tab Setting Value

Definition Title Mode User Specified

Title Streamline Temp.

Horizontal (Selected)

Location > Y Justification Bottom

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Point and Normal: defines a plane from one point on the planeand a normal vectorto the plane.

YZ Plane, ZX Plane, and XY Plane: similar to Point and Normal,except that the

normal is defined to be normal to the indicated plane.

Procedure 1. From the main menu, select Insert > Location> Plane or click Location > Plane.

2. In the New Plane window, type: Slice

3. Click OK.

The Geometry, Color, Render and View tabs let you switch betweensettings.

4. Click the Geometry tab.

Defining Slice Plane Geometry

You need to choose the vector normal to the plane. You want theplane to lie in the x-y

plane, hence its normal vector points along the z-axis. You canspecify any vector that points

in the z-direction, but you will choose the most obvious(0,0,1).

Procedure 1. If required, under Geometry, expand Definition.

2. Under Method select Point and Normal.

3. Under Point enter 0,0,1.

4. Under Normal enter 0, 0,1.

5. Click Apply.

Slice appears under User Locations and Plots. Rotate the view tosee the plane.

Configuring Slice Plane Views

Depending on the view of the geometry, various objects may notappear because they fall

in a 2D space that cannot be seen.

Procedure 1. Right-click a blank area in the viewer and selectPredefined Camera > Isometric View(Z up).

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The slice is now visible in the viewer.

2. Click Zoom Box .

3. Click and drag a rectangular selection over the geometry.

4. Release the mouse button to zoom in on the selection.

5. Click Rotate .

6. Click and drag the mouse pointer down slightly to rotate thegeometry towards you.

7. Select Isometric View (Z up) as described earlier.

Rendering Slice Planes

Render settings determine how the plane is drawn.

Procedure 1. Select the Render tab.

2. Clear Draw Faces.

3. Select Draw Lines.

4. Under Draw Lines change Color Mode to User Specified.

5. Click the current color in Line Color to change to adifferent color.

For a greater selection of colors, click the ellipsis to use theSelect color dialog box.

6. Click Apply.

7. Click Zoom Box .

8. Zoom in on the geometry to view it in greater detail.

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The line segments show where the slice plane intersects withmesh element faces. Theend points of each line segment are locatedwhere the plane intersects mesh elementedges.

9. Right-click a blank area in the viewer and select PredefinedCamera > View Towards-Z.

The image shown below can be used for comparison with tutorial 2(in the sectionCreating a Slice Plane (p. 68)), where a refinedmesh is used.

Coloring the Slice Plane

The Color panel is used to determine how the object faces arecolored.

Procedure 1. Apply the following settings to Slice

2. Click Apply.

Hot water (red) enters from one inlet and cold water (blue) fromthe other.

Moving the Slice Plane

The plane can be moved to different locations.

Tab Setting Value

Color Mode Variable*

*. You can specify the variable (in this case, temperature) usedto color the graphicelement. The Constant mode allows you to colorthe plane with a fixed color.

Variable Temperature

Render Draw Faces (Selected)

Draw Lines (Cleared)

Tutorial 1: Simulating Flow in a Static Mixer Using CFX inStandalone Mode: Viewing the Results in ANSYS CFX-Post

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Procedure 1. Right-click a blank area in the viewer and selectPredefined Camera > Isometric View(Z up) from the shortcutmenu.

2. Click the Geometry tab.

Review the settings in Definition under Point and underNormal.

3. Click Single Select .

4. Click and drag the plane to a new location that intersectsthe domain.

As you drag the mouse, the viewer updates automatically. Notethat Point updates withnew settings.

5. Set Point settings to 0,0,1.

6. Click Apply.

7. Click Rotate .

8. Turn off visibility for Slice by clearing the check box nextto Slice in the Outline.

Adding Contours

Contours connect all points of equal value for a scalar variable(for example, Temperature)

and help to visualize variable values and gradients. Coloredbands fill the spaces between

contour lines. Each band is colored by the average color of itstwo bounding contour lines

(even if the latter are not displayed).

Procedure 1. Select Insert > Contour from the main menu orclick Contour .

The New Contour dialog box is displayed.

2. Set Name to Slice Contour.

3. Click OK.

4. Apply the following settings

5. Click Apply.

Important: The colors of 3D graphics object faces are slightlyaltered when lighting is on. Toview colors with highest accuracy,clear Lighting under Draw Faces on the Render tab andclickApply.

Tab Setting Value

Geometry Locations Slice

Variable Temperature

Render Draw Faces (Selected)

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The graphic element faces are visible, producing a contour plotas shown.

Note: Make sure that the checkbox next to Slice in the Outlineis cleared.

Working with Animations

Animations build transitions between views for development ofvideo files.

WorkflowOverview

This tutorial follows the general workflow for creating akeyframe animation:

1. Showing the Animation Dialog Box (p. 25)

2. Creating the First Keyframe (p. 26)

3. Creating the Second Keyframe (p. 26)

4. Viewing the Animation (p. 27)

5. Modifying the Animation (p. 28)

6. Saving to MPEG (p. 29)

Showing the Animation Dialog Box

The Animation dialog box is used to define keyframes and toexport to a video file.

Procedure 1. Select Tools > Animation or click Animation.

The Animation dialog box can be repositioned as required.

Tutorial 1: Simulating Flow in a Static Mixer Using CFX inStandalone Mode: Viewing the Results in ANSYS CFX-Post

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Creating the First Keyframe

Keyframes are required in order to produce an animation. Youneed to define the first viewer

state, a second (and final) viewer state, and set the number ofinterpolated intermediate

frames.

Procedure 1. Right-click a blank area in the viewer and selectPredefined Camera > Isometric View(Z up).

2. In the Outline, under User Locations and Plots, clear thevisibility of SliceContour and select the visibility of Slice.

3. In the Animation dialog box, click New .

A new keyframe named KeyframeNo1 is created. This represents thecurrent imagedisplayed in the viewer.

Creating the Second Keyframe

Keyframes are required in order to produce an animation.

Procedure 1. In the Outline, under User Locations and Plots,double-click Slice.

2. On the Geometry tab, set Point coordinate values to(0,0,-1.99).3. Click Apply.

The slice plane moves to the bottom of the mixer.

4. In the Animation dialog box, click New .

KeyframeNo2 is created and represents the image displayed in theViewer.

Tutorial 1: Simulating Flow in a Static Mixer Using CFX inStandalone Mode: Viewing the Results in ANSYS CFX-Post

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5. Select KeyframeNo1.

6. Set # of Frames (located below the list of keyframes) to20.

This is the number of intermediate frames used when going fromKeyframeNo1 toKeyframeNo2. This number is displayed in the Framescolumn for KeyframeNo1.

7. Press Enter.

The Frame # column shows the frame in which each keyframeappears. KeyframeNo1appears at frame 1 since it defines the startof the animation. KeyframeNo2 is at frame22 since you have 20intermediate frames (frames 2 to 21) in between KeyframeNo1andKeyframeNo2.

Viewing the Animation

More keyframes could be added, but this animation has only twokeyframes (which is the

minimum possible).

Synopsis The controls previously greyed-out in the Animationdialog box are now available. The

number of intermediate frames between keyframes is listed besidethe keyframe having the

lowest number of the pair. The number of keyframes listed besidethe last keyframe is

ignored.

Procedure 1. Click Play the animation .

The animation plays from frame 1 to frame 22. It playsrelatively slowly because the slice

plane must be updated for each frame.

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Modifying the Animation

To make the plane sweep through the whole geometry, you will setthe starting position of

the plane to be at the top of the mixer. You will also modifythe Range properties of the

plane so that it shows the temperature variation better. As theanimation is played, you can

see the hot and cold water entering the mixer. Near the bottomof the mixer (where the

water flows out) you can see that the temperature is quiteuniform. The new temperature

range lets you view the mixing process more accurately than theglobal range used in the

first animation.

Procedure 1. Apply the following settings to Slice

2. Click Apply.

The slice plane moves to the top of the static mixer.

Note: Do not double click in the next step.

3. In the Animation dialog box, single click (do notdouble-click) KeyframeNo1 to select it.

If you had double-clicked KeyFrameNo1, the plane and viewerstates would have beenredefined according to the stored settingsfor KeyFrameNo1. If this happens, click

Undo and try again to select the keyframe.

4. Click Set Keyframe .

The image in the Viewer replaces the one previously associatedwith KeyframeNo1.

5. Double-click KeyframeNo2.

The object properties for the slice plane are updated accordingto the settings inKeyFrameNo2.

6. Apply the following settings to Slice

7. Click Apply.

8. In the Animation dialog box, single-click KeyframeNo2.

9. Click Set Keyframe to save the new settings toKeyframeNo2.

Tab Setting Value

Geometry Point 0, 0, 1.99

Color Variable Temperature

Range User Specified

Min 295 [K]

Max 305 [K]

Tab Setting Value

Color Variable Temperature

Range User Specified

Min 295 [K]

Max 305 [K]

Tutorial 1: Simulating Flow in a Static Mixer Using CFX inStandalone Mode: Viewing the Results in ANSYS CFX-Post

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Saving to MPEG

By defining the geometry and then saving to MPEG, the resultscan be saved to a video file.

Procedure 1. Click More Animation Options to view the additionaloptions.

The Loop and Bounce radio buttons determine what happens whenthe animationreaches the last keyframe. When Loop is selected, theanimation repeats itself thenumber of times defined by Repeat. WhenBounce is selected, every other cycle isplayed in reverse order,starting with the second.

2. Click Save MPEG.

3. Click Browse next to Save MPEG.

4. Under File name type: StaticMixer.mpg

5. If required, set the path location to a different folder.

6. Click Save.

The MPEG file name (including path) is set. At this point, theanimation has not yet beenproduced.

7. Click Previous Keyframe .

Wait a moment as the display updates the keyframe display.

8. Click Play the animation .

9. If prompted to overwrite an existing movie clickOverwrite.

The animation plays and builds an MPEG file.

10. Click the Options button at the bottom of the Animationdialog box.

In Advanced, you can see that a Frame Rate of 24 frames persecond was used to createthe animation. The animation you producedcontains a total of 22 frames, so it takes justunder 1 second toplay in a media player.

11. Click Cancel to close the dialog box.

12. Close the Animation dialog box.

13. Review the animation in thirdparty software as required.

Exiting ANSYS CFX-Post

When finished with ANSYS CFX-Post exit the current window:

1. When you are finished, select File > Quit to exit ANSYSCFX-Post.

2. Click Quit if prompted to save.

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ANSYS CFX Tutorials

Tutorial 1a:Simulating Flow in a StaticMixer Using Workbench

Introduction

This tutorial simulates a static mixer consisting of two inletpipes delivering water into a

mixing vessel; the water exits through an outlet pipe. A generalworkflow is established for

analyzing the flow of fluid into and out of a mixer.

This tutorial comprises:

Before You Begin (p. 32)

Tutorial 1a Features (p. 32)

Overview of the Problem to Solve (p. 33)

Defining a Simulation in ANSYS CFX-Pre (p. 34)

Obtaining a Solution Using ANSYS CFX-Solver Manager (p. 41)

Viewing the Results in ANSYS CFX-Post (p. 43)

If this is the first tutorial you are working with, it isimportant to review the following topics

before beginning:

Setting the Working Directory (p. 1)

Changing the Display Colors (p. 2)

To learn how to perform these tasks using CFX in Standalonemode, see Tutorial 1:

Simulating Flow in a Static Mixer Using CFX in Standalone Mode(p. 3 in "ANSYS CFX

Tutorials").

Tutorial 1a: Simulating Flow in a Static Mixer Using Workbench:Before You Begin

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Before You Begin

Create a working directory for your files. Once this is done,copy the sample files used in this

tutorial to your working directory from the installation folderfor your software

(/examples/ (for example, C:\ProgramFiles\ANSYSInc\v110\CFX\examples)) to avoid overwriting sourcefiles provided with yourinstallation. If you plan to use a sessionfile, please refer to Playing a Session File (p. 35).

Sample files used by this tutorial are:

StaticMixerMesh.gtm

StaticMixer.pre

Tutorial 1a Features

This tutorial addresses the following features of ANSYS CFX.

In this tutorial you will learn about:

Using Quick Setup mode in ANSYS CFX-Pre to set up a problem.

Modifying the outline plot in ANSYS CFX-Post.

Using streamlines in ANSYS CFX-