14.3.3. Setting up a CFX Simulation to use GT-SUITE

  1. Set up a GT model using GT-SUITE and produce a .gtm file.

    Note that CFD Coupling interfaces must be created in GT-SUITE. The interface type must be set to 1 (velocity-flow type).

  2. Create a domain in CFX.

    This requires importing a mesh or loading an existing case beforehand.

  3. Set the analysis type to be transient.

  4. Add material species in CFX that are consistent with the material species in the GT model.

    You can do this manually in CFX-Pre, or you can import GT-SUITE species from a material library CCL file later when you initialize the GT-SUITE model in CFX-Pre.

    Note:  A material library CCL file might be obtainable from Gamma Technologies (gtisoft.com).

  5. Ensure that domain initialization is consistent with the GT-SUITE model.

  6. Initialize the GT-SUITE model, creating a new model object or re-initializing an existing one.

    For details, see Initializing or Re-initializing a GT-SUITE Model.

    If the setup changes later, you can re-initialize the model, or, to adjust the GT-SUITE version number, installation path, or material association, you can edit the GT-SUITE Model object. For details, see Editing a GT-SUITE Model. You can also review and edit the GT-SUITE Patch functions if needed. For details, see GT-SUITE Patch Functions in the CFX-Pre User's Guide. You can also review and edit the GT-SUITE Turboshaft functions if needed. For details, see GT-SUITE Turboshaft Functions in the CFX-Pre User's Guide.

  7. If, in the Initialize GT-SUITE Coupling dialog box, on the Boundary Association tab, you did not choose the Specify Boundary Names option and select Modify boundaries to use GT-SUITE Coupling, you should modify CFX boundaries to use GT-SUITE Patch functions as appropriate.

    For details, see Use GT-SUITE Coupling in the CFX-Pre User's Guide.

  8. If, in the Initialize GT-SUITE Coupling dialog box, on the Turboshaft Setup tab, you did not select Modify domain motion to use GT-SUITE Coupling, you should modify CFX domains to use GT-SUITE Turboshaft functions as appropriate.

    For details, see GT-SUITE Domain Models in the CFX-Pre User's Guide.

  9. If, in the Initialize GT-SUITE Coupling dialog box, on the Monitoring tab, you did not specify all of the desired solution monitors, note that you can add monitors manually.

    For details, see Working with Monitors in the CFX-Pre User's Guide.

 

14.3.3.1. Initializing or Re-initializing a GT-SUITE Model

Before initializing a new GT-SUITE model, consider creating the CFX domains. With domains already created, you can create domain boundaries that use GT-SUITE, or modify existing domain boundaries to use GT-SUITE, as part of the GT-SUITE Coupling initialization process. Without any domains, however, you can still initialize the model and then later set up the boundaries, materials, and functions.

  1. Select Tools > Initialize GT-SUITE Coupling.

    The Initialize GT-SUITE Coupling dialog box appears. For details, see Initialize GT-SUITE Coupling in the CFX-Pre User's Guide.

  2. At the top of the dialog box, select an option:

    • Create new GT-SUITE model

      Choose this option to create and initialize a coupling model.

    • Re-initialize existing GT-SUITE model

      Choose this option to make changes to, and then re-initialize, an existing GT-SUITE model.

  3. If, in the previous step, you chose to re-initialize an existing GT-SUITE model, set Model Name to the name of the existing model.

  4. Set Model File to the name of a .gtm file that contains the GT-SUITE model.

    To do this, you can optionally click Browse   to use the Select GT-SUITE File dialog box.

  5. Set GT-SUITE Version according to the version of GT-SUITE that wrote the .gtm file.

  6. If a .dat file is available, optionally select Read setup from related .dat file if available to quicken the setup process.

    Note:  You must ensure that the .dat file is up-to-date with the corresponding GT-SUITE .gtm file.

  7. Optionally select Specify GT-SUITE Installation and set GT-SUITE Installation to the name of the installation directory, which is typically similar to the following on a Windows system:

    C:\Program Files (x86)\GTI

    You can optionally click Browse   to browse using the Select Directory dialog box.

    By specifying a path, you override the default path set by environment variable GTIHOME. The specified installation directory must contain the version-specific subdirectory indicated by the GT-SUITE Version setting.

  8. Click Read Setup From File.

    CFX-Pre then reads the coupling information directly from the GT-SUITE .gtm file (or .dat file as applicable).

    After some time (significantly less time if a .dat file is used), additional tabs appear in the dialog box.

  9. Configure the Boundary Association tab.

    For details, see Boundary Association Tab in the CFX-Pre User's Guide.

  10. Configure the Material Association tab.

    For details, see Material Association Tab in the CFX-Pre User's Guide.

  11. Configure the Turboshaft Setup tab.

    For details, see Turboshaft Setup Tab in the CFX-Pre User's Guide.

  12. Configure the Monitoring tab.

    For details, see Monitoring Tab in the CFX-Pre User's Guide.

  13. Configure the Function Names tab.

    For details, see Function Names Tab in the CFX-Pre User's Guide.

  14. Click OK (or click Apply then Close).

Initialization of GT-SUITE Coupling results in:

 

14.3.3.2. Editing a GT-SUITE Model

The GT-SUITE Model object contains a mapping between materials in CFX and materials in GT-SUITE. When you initialize a GT-SUITE model, material names are read from the GT-SUITE definition (.gtm) file. You must set up mapping between the materials in the .gtm file and the materials available in CFX-Pre. In the Material Mapping list, choose a GT-SUITE material, then in the Material Name field below the list, choose the corresponding CFX material.