The Aeroacoustic-Structure Boundary coupling (
) is used to couple an Aeroacoustic model (it only applies to the Linearized Navier-Stokes interfaces) to any structural component. The feature couples to Solid Mechanics, Shell, Layered Shell, Membrane, and Multibody Dynamics interfaces. The coupling can be used to, for example, model fluid-structure interaction (FSI) in the frequency domain.
where ut,fluid is the total fluid velocity (including a background component if applicable) and
usolid is the solid displacement. The first equation is in the frequency domain and the second is in the time domain. This coupling results in the stress also being continuous across the boundary. The condition for the total temperature
Tt can be set to either isothermal or adiabatic. In the case where a shell or membrane is interior to the thermoviscous acoustics domain, a slit is automatically applied to the pressure
p and temperature
T degrees of freedom (DOFs).
See Settings for further details about
Label and
Name.
The default Name (for the first multiphysics coupling feature in the model) is
aesb1.
Select the Thermal condition that applies on the solid surface to be either
Isothermal (the default selected) or
Adiabatic.