Preparing the GT-SUITE Simulation for Co-Simulation

Starting from a fully set up GT-SUITE simulation, you define the co-simulation interface by adding CFD objects to the model map.

The following instructions outline the general workflow and may vary based on the version of GT-SUITE that you are running.
  • For a step-by-step example using GT-SUITE v2017, refer to the tutorial GT-SUITE Co-Simulation: 1D Coupling.
  • For more information on setting up a simulation in GT-SUITE, refer to the GT-SUITE User Guide.

Before you define co-simulation settings:

  1. Launch GT-ISE and load the GT-SUITE simulation that you want to couple with Simcenter STAR-CCM+.
  2. Run the standalone GT-SUITE analysis until converged.
    This practice allows you to:
    • Check that the GT-SUITE simulation is set up correctly.
    • Determine the number of cycles that are required to achieve convergence.
    • Use the results from the standalone GT-SUITE analysis as initial conditions in Simcenter STAR-CCM+, in order to speed up convergence of the coupled problem.
  3. Analyze the results in GT-POST, making note of the average values for pressure, temperature, and, when modeling multi-component gases, species mass fractions.
To prepare the simulation for coupling, you add CFD objects to the GT-SUITE model. CFD objects allow you to define the interfaces with Simcenter STAR-CCM+ and to control the co-simulation settings. To create CFD objects, you require the corresponding templates:
  1. In the Templates and Search ribbon, click Template Library.


  2. In the Template Library tree, expand the Flow > General Flow node.
  3. Drag and drop the following templates from the template library tree onto the project tree:
    • Components > CFDComponent
    • Components > CFDInterface
    • either:
      • Connections > CFDFlowConn
      • Connections > CFDFlowConnBeta

        The CFDFlowConnBeta object exposes additional controls for setting pressure relaxation and tracking mass continuity at the interface.