The Background Potential Flow Coupling () is a unidirectional multiphysics coupling that couples the background flow calculated by a Compressible Potential Flow interface to the Linearized Potential Flow interfaces. The coupling provides the flow inputs for the Linearized Potential Flow Model.

For good numerical performance and accuracy, the Compressible Potential Flow model and the linearized acoustics model need to be solved on the same mesh. This multiphysics coupling does not rely on a mapping strategy like the Background Fluid Flow Coupling used to couple a fluid flow solution to the linearized Euler and linearized Navier–Stokes interfaces. The coupling is also applicable in PML domains where the Compressible Flow model can be solved.

See Settings for further details about Label and Name.

The default Name (for the first multiphysics coupling feature in the model) is pfc1.

This section defines the physics involved in the multiphysics coupling. The Source and Destinations lists include all applicable physics interfaces. See the Coupled Interfaces in Acoustic–Structure Boundary for details.