Starting the Project

  1. Set up a working directory on your computer.

  2. Download the 2dcar.zip file here .

  3. Unzip the 2dcar.zip file you have downloaded to your working directory.

  4. Initialize your project.

    1. Ansys ICEM CFD stand-alone users:

      1. Start Ansys ICEM CFD.

      2. Create a new project in your working directory. Use an appropriate name, for example 2D_Car_base.

        File > New Project

    2. Ansys Workbench users:

      1. Create an ICEM CFD Component in your Project Schematic.

      2. Double click the Model cell to open ICEM CFD.

  5. Open the original, unmodified geometry file. (car_base.tin).

    File > Geometry > Open Geometry

    The following Parts have been defined in the geometry. Ensure that all the names of the listed Parts are available in the Display Tree.

    • CAR: Vehicle geometry.

    • GROUND: Lower limit of the wind tunnel.

    • INLET: Where flow enters the wind tunnel. In this example, it is the left-side limit of the geometry.

    • OUTLET: Where flow exits the wind tunnel.

    • PNTS: Prescribed points associated with the Car.

    • TOP: Upper limit of the wind tunnel.

    Note:  This geometry contains only curves and points. Surfaces are helpful, but not necessary for 2D meshing.

  6. Activate the Replay Control function.

    A Replay file will be created and then used on the modified geometry (car_mod.tin). The same part and entity names are used in both the base and modified geometries, which allows the Replay file to be run without editing, on the modified geometry.

    File > Replay Scripts > Replay Control

    Note:

    • The replay function allows you to record the steps necessary to complete the mesh. The Replay Control window may be moved aside or minimized while recording, but the window should be kept active until recording is complete.

    • Record (after current) is enabled by default – all commands will be recorded until you select Done.

    • The step of loading the geometry is not typically recorded in the replay script.

Note:

  • If you want Ansys ICEM CFD to behave exactly as this tutorial describes, you should go to the Settings Menu, click Selection, and disable Auto Pick Mode in the DEZ. Most experienced ICEM CFD users prefer to enable Auto Pick Mode as it improves efficiency. See Selection in the ICEM CFD Help Manual > Main Menu Area > Settings Menu for more detail.

  • Throughout this and other tutorials, Point Names, Curve Names, Vertex Numbers, and other identifying labels are made visible or turned off as necessary to assist in describing the steps of the tutorial. Most experienced users prefer to leave these labels disabled to reduce screen clutter.