Specifying the Coupled Boundaries and Material Components

Associate the Simcenter STAR-CCM+ boundaries and material components with their GT-SUITE counterparts.

Start by creating a co-simulation zone for each of the CFD connections that you defined in GT-SUITE. Co-simulation zones allow you to couple Simcenter STAR-CCM+ boundaries with the partner GT-SUITE CFD connections.
  1. Expand the External Links > Link 1 > Zones node.
    Simcenter STAR-CCM+ automatically added a co-simulation zone when you activated the GT-SUITE co-simulation model.
To successfully couple Simcenter STAR-CCM+ and GT-SUITE, the names of the co-simulation zones in Simcenter STAR-CCM+ must match the names of the CFD connections in GT-SUITE:
  1. Rename Zone 1 to Cyl1.
Create a co-simulation zone to couple the Cyl2 boundary to the partner CFD connection, Cyl2:
  1. Right-click the Zones node and select New. Rename the new zone to Cyl2.
  2. Repeat the previous step to create 4 co-simulation zones named Cyl3, Cyl4, Intake, and EGR.


Assign the flow boundaries to the corresponding co-simulation zones, so they can exchange data with GT-SUITE:

  1. Expand the Regions > Manifold > Boundaries node.
  2. Select the Cyl1 > Physics Conditions > External Code Coupling Specification node and set External Code Coupling Specification to Link 1: Cyl1.
  3. Repeat the previous step to assign the remaining flow boundaries, Cyl2, Cyl3, Cyl4, Intake, and EGR, to the corresponding co-simulation zones.
GT-SUITE determines the species that are passed to Simcenter STAR-CCM+ and handles the mapping of species from Simcenter STAR-CCM+ back to GT-SUITE.

To couple the GT-SUITE species, indolene-combust, with the Simcenter STAR-CCM+ passive scalar, indolene-combust:

  1. Expand the External Links > Link 1 node.
Add a partner material component to represent the GT-SUITE species:
  1. Right-click the Values > Partner Material Components node and select New Partner Material Component.
The name of the partner material component must match the name of the associated GT-SUITE species:
  1. Rename Material Component 1 to indolene-combust.
  2. Select the indolene-combust node and set Coupled STAR-CCM+ Mixture Component/Passive Scalar to indolene-combust.
  3. Repeat the previous steps to couple the remaining gas components and passive scalars to the corresponding GT-SUITE species.


  4. Save the simulation.