Create the System Coupling Region

The System Coupling Region defines the interface between the fluid in the fluid analysis and the solid in the structural analysis. This is where the reed valve interacts with the fluid. Data will be transferred across this interface during the execution of the simulation.

Create this interface on regions in the structural model that will receive force data from the fluid analysis via System Coupling.

  1. In the Outline, right-click Transient and select Insert > System Coupling Region.

    A System Coupling Region is added to the tree.

  2. Specify the faces to which the interface will be applied.

    1. Select the Face icon ( ).

    2. Multi-select the five faces of the geometry that form the interface between the structural model and the fluid model:

      • One high-y face (valve top)

      • Three low-y faces (valve bottom and contact)


        Note:  The valve bottom is partitioned into three faces.


      • One low-x face (valve tip)

  3. In Details of "System Coupling Region" next to Geometry, click Apply.

    The Geometry setting updates to 5 Faces, indicating the selected faces are included on the interface.

  4. Save the project and close Mechanical.

  5. Update the structural setup.

    On the Project Schematic, right-click the Transient Structural system's Setup cell and select Update.

    The system updates and is in an Up-to-Date state ( )

The structural setup is complete.