The Moving Wall condition can in the time domain only be defined in terms of the normal displacement. It is used to define a vibrating or moving wall. The displacement can be any time-dependent expression. The condition can, for example, be used to model an actuator creating sound in a gas flowmeter.

Enter a Normal displacement vn (SI unit: m).

To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box.

To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog box. See Suppressing Constraints on Lower Dimensions for details.