The Acoustic-Solid-Poroelastic Waves Interaction multiphysics interface (
) combines Pressure Acoustics, Frequency Domain, Solid Mechanics, and Poroelastic Waves together with the Acoustic-Structure Boundary, Porous-Structure Boundary, and Acoustic-Porous Boundary multiphysics couplings.
When a predefined Acoustic-Solid-Poroelastic Waves Interaction interface is added from the
Acoustics>Acoustic-Structure Interaction branch (
) of the
Model Wizard or the
Add Physics windows, the
Pressure Acoustics, Frequency Domain,
Solid Mechanics, and
Poroelastic Waves interfaces are added to the Model Builder.
In addition, the Multiphysics Couplings node is added, which automatically includes the
Acoustic-Porous Boundary,
Porous-Structure Boundary, and
Acoustic-Structure Boundary multiphysics couplings.
When a predefined multiphysics interface is used, for example Acoustic-Solid-Poroelastic Waves Interaction, the
Selection on the multiphysics couplings is automatically set to
All boundaries. In this way, the relevant multiphysics couplings are automatically active on all relevant boundaries connecting two physics.
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.
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).