《CFX5.5培训资料》（英文版）Completing a CFD Simulation

CFX! Completing a CFD Simulation USing CFX-5 CFX5.5V5.5.1H C 2001AEA Technolog

CFX 5.5 V5.5.1H © 2001AEA Technology 2-1 Completing a CFD Simulation Using CFX-5

CFX! CFX-5 Modeling Approach Create a solid which defines the region of interest Define the fluid domain in terms of flow region, physical models, and fluid properties Apply boundary conditions to fluid domain surfaces Specify an initial guess/condition for the simulation Create a mesh for the fluid domain Set the solver parameters which will be used by the solver Write a definition file containing the model information. This includes mesh information, physical properties, boundary conditions, etc Use the solver manager to run the solver and monitor the solution View the results with cfX-post This approach will be followed in the practical sessions. CFX5.5V5.5.1H C 2001AEA Technolog

CFX 5.5 V5.5.1H © 2001AEA Technology 2-2 CFX-5 Modeling Approach Create a solid which defines the region of interest. Define the fluid domain in terms of flow region, physical models, and fluid properties. Apply boundary conditions to fluid domain surfaces. Specify an initial guess/condition for the simulation. Create a mesh for the fluid domain. Set the solver parameters which will be used by the solver. Write a definition file containing the model information. This includes mesh information, physical properties, boundary conditions, etc... Use the solver manager to run the solver and monitor the solution. View the results with CFX-Post. This approach will be followed in the practical sessions

CFX! Introduction Purpose to work through a complete cfd solution process as a hands-on exercise to introduce the cfx-5 User Interface Detailed instructions for the exercise are provided CFX5.5V5.5.1H C 2001AEA Technology

CFX 5.5 V5.5.1H © 2001AEA Technology 2-3 Introduction Purpose: - to work through a complete CFD solution process as a hands-on exercise - to introduce the CFX-5 User Interface Detailed instructions for the exercise are provided

CFX! Problem definition Water flowing through a simple duct bend will be modelled 2.4 CFX5.5V5.5.1H C 2001AEA Technolog

CFX 5.5 V5.5.1H © 2001AEA Technology 2-4 Problem Definition Water flowing through a simple duct bend will be modelled

CFX! Starting CFX-5 On Pc CFX-5 has been started for you (by double-clicking on the CFX-5 icon on the desktop) to work in the course directory for this course Click Browse. and create a new Directory Name: called duct to become the working directory On unix Make a working directory mkdir duct Change to the working directory cd duct Start CFX-5 cfx5 CFX5.5V5.5.1H C 2001AEA Technology

CFX 5.5 V5.5.1H © 2001AEA Technology 2-5 Starting CFX-5 On PC CFX-5 has been started for you (by double-clicking on the CFX-5 icon on the Desktop) to work in the course directory for this course Click Browse... and create a new Directory Name: called duct to become the working directory On Unix Make a working directory - mkdir duct Change to the working directory - cd duct Start CFX-5 - cfx5

CFX! Starting CFx-Build Click on cfX-build Create a new databas From the top menu, pull down File and New Add duct to the path in the new database Name field Click on OK Template Database Name D: 1CFXICFX-5. 5betatbuild 5 51 5betalwwinnt/CFXBuild5 te × Change Template File Options Run Show Toos Hep Working Directory: d: /work_stuf/duc:55 Browse F Modify Preference FX-Build)x5 Solver ManagerCFX-Post +国国 □#f×.90日 CFX5.5V5.5.1H C 2001AEA Technology

CFX 5.5 V5.5.1H © 2001AEA Technology 2-6 Starting CFX-Build Click on CFX-Build Create a new database - From the top menu, pull down File and New - Add duct to the path in the New Database Name field - Click on OK

CFX! New model preferences New model preferences In the New Model preferences menu 回x Model Preferences for. Choose Generate mesh as Meshing Mode Meshing Mode. ( This is the default) C Import Mesh Set the Geometry dimensions to C Mesh Only Mode inch Geometry Dimensions In Use a global Model tolerance of inch (in)D 0.005 Global Model Tolerance Tolerance Click on oK 0005 Reset CFX5.5V5.5.1H C 2001AEA Technolog

CFX 5.5 V5.5.1H © 2001AEA Technology 2-7 New Model Preferences In the New Model Preferences menu: - Choose Generate Mesh as Meshing Mode.(This is the default) - Set the Geometry Dimensionsto inch (in) - Use a Global Model Tolerance of 0.005 - Click on OK

CFX! Geometry Select the Geometry radio button from the top window We are going to create the bounding surfaces and then a b-rep solid The following directions are shown using the Action/Object/Method syntax On each form, press-Apply- to execute the action Action:)Create Object: Point Method:) XYZ CFX5.5V5.5.1H C 2001AEA Technolog

CFX 5.5 V5.5.1H © 2001AEA Technology 2-8 Select the Geometry radio button from the top window We are going to create the bounding surfaces and then a B-rep solid The following directions are shown using the Action/Object/Method syntax On each form, press -Apply- to execute the action Geometry

CFX! Geometry Turn on the show labels and point size icons from toolbar icons ③s畇 Create/Point/XYZ: at [0 1 0]and[0 40 how labels point siz tded a- woup . Ent Object: (Point XY∠ Point ID List Refer Coordinate Frame Coord o 厂 Auto Execute Point Coordinates list d[040D CFX CFX5.5V5.5.1H C 2001AEA Technology

CFX 5.5 V5.5.1H © 2001AEA Technology 2-9 Geometry Show labels Point size Turn on the Show labels and Point size icons from toolbar icons Create/Point/XYZ: at [0 1 0] and [0 4 0]

CFX! Geometry Create/Curve/Point: connect 2 points with a curve Action:(Create Object Curve Method:(Point Curve D list urve Type F Parametric Cubi Point Auto Execute Starting Point List Point Point List Point 2 CFX 2-10 CFX5.5V5.5.1H C 2001AEA Technology

CFX 5.5 V5.5.1H © 2001AEA Technology 2-10 Create/Curve/Point: connect 2 points with a curve Geometry