Modifying the Run Setup

Modify the run setup to allow the GT-SUITE simulation to run 20 pre-cycles, and then 3 coupled cycles.

Make sure that the GT-SUITE simulation duration contains the coupled cycles. This practice allows the GT-SUITE solver to collect results for the coupled cycles for post-processing within GT-POST.

Previously, you ensured the solver would stop when the solution was steady state. However, you begin coupling to Simcenter STAR-CCM+ after the GT-SUITE solution reaches a periodic steady state. Allow the solver to continue after the steady state criteria are met, and set the simulation to run 20 pre-cycles, plus 3 coupled cycles, which requires 23 cycles in total.

To modify the run setup:

  1. In the Model Setup ribbon, click Run Setup.
  2. In the Run Setup dialog, select the TimeControl tab.
  3. To run the solver for the required number of engine cycles, set Maximum Simulation Duration (Cycles) to 23.
    This value gives enough cycles for the GT-SUITE simulation to converge (20), plus the required number of coupled cycles (3).
  4. Set Automatic Shut-Off When Steady-State to off, so that the solver runs for the maximum number of cycles, without terminating prematurely.
  5. Click OK.
  6. Save the GT-SUITE model.