Normal Acceleration

The Normal Acceleration adds an inward normal acceleration an:

Alternatively, specify the acceleration a0 of the boundary. The part in the normal direction is used to define the boundary condition:

This feature represents an external source term. It can also be used to manually couple acoustics with a structural analysis for modeling acoustic-structure interaction.

Normal Acceleration

Select a Type—Inward Acceleration (the default) or Acceleration.

•	For Inward Acceleration, enter the value of the Inward acceleration an (SI unit: m/s2). The default is 0 m/s2. Use a positive value for inward acceleration or a negative value for outward acceleration.

•	For Acceleration, enter values for the components of the Acceleration a0 (SI unit: m/s2). The defaults are 0 m/s2.