The Pressure Acoustics node adds the equations for time-harmonic and eigenfrequency acoustics modeling in the frequency domain. In the Settings window, define the properties for the acoustics model and model inputs including temperature.

The default Fluid model for pressure acoustics is a Linear elastic fluid. By default, the values for the Density ρ (SI unit: kg/m3) and the Speed of sound c (SI unit: m/s) are taken From material. For User defined, enter other values for these properties.