Normal Velocity
Use the Normal Velocity node in time-harmonic analysis to specify the velocity component normal to the boundary:
Here vn denotes the outward normal velocity at the boundary surface, which is specified in the vn text field. The formulation is a variant of the Ingard-Myers type impedance condition as vn = p/Zi (see the Impedance condition).
Normal Velocity
Enter a Normal velocity vn (SI unit: m/s).