The Acoustic-Porous Boundary coupling (
) is used to couple a Pressure Acoustics interface to a Porous Material (Biot’s model) domain from the Poroelastic Waves interface. This includes both the FEM based acoustics interfaces and the BEM based acoustics interface. The boundary coupling feature includes the following interaction between the fluid and the porous domains:
where pt is the total acoustic pressure in the fluid domain and the left hand side represents the total stress for the saturated porous domain.
See Settings for further details about
Label and
Name.
The default Name (for the first multiphysics coupling feature in the model) is
apb1.