The Acoustic-Poroelastic Waves Interaction multiphysics interface (
) combines Pressure Acoustics, Frequency Domain and Poroelastic Waves together with the Acoustic-Porous Boundary multiphysics coupling.
When a predefined Acoustic-Poroelastic Waves Interaction interface is added from the
Acoustics>Acoustic-Structure Interaction branch (
) of the
Model Wizard or the
Add Physics windows, the
Poroelastic Waves and
Pressure Acoustics, Frequency Domain interfaces are added to the Model Builder.
In addition, the Multiphysics Couplings node is added, which automatically includes the
Acoustic-Porous Boundary multiphysics coupling.
When the predefined multiphysics interface is used, for example Acoustic-Poroelastic Waves Interaction, the
Selection on the multiphysics coupling is automatically set to
All boundaries. In this way the multiphysics coupling is automatically active on all boundaries with
Pressure Acoustics, Frequency Domain on one side and
Poroelastic Waves on the other.
For example, if single Poroelastic Waves and
Pressure Acoustics, Frequency Domain interfaces are added, COMSOL Multiphysics adds an empty
Multiphysics Couplings node. You can choose the available multiphysics couplings, but you need manually to select on which boundaries they need to be applied, or select
All boundaries to recover the predefined behavior
The Acoustic-Porous Boundary multiphysics coupling is described in the
Multiphysics Couplings chapter.
Physics nodes are available from the Physics ribbon toolbar (Windows users),
Physics context menu (Mac or Linux users), or right-click to access the context menu (all users).