Acoustics Material Properties

Under Acoustics, you find the following acoustic material models with their associated material properties: a Poroacoustics Model, a Thermoviscous Acoustics Model, and a Viscous Model.

These material property groups (including their associated physical properties) can be added to models from the Material window. These property groups require the Acoustics Module.

Table 9-3: Acoustics Materials

Property Group and Property	Name/Variable	SI Unit
Poroacoustics Model
Flow resistivity	Rf	Pa·s/m2
Thermal characteristic length	Lth	m
Viscous characteristic length	Lv	m
Tortuosity factor	tau	1
Thermoviscous acoustics Model
Bulk viscosity	muB	Pa·s
Density	rho	kg/m3
Dynamic viscosity	mu	Pa·s
Heat capacity at constant pressure	Cp	J/(kg·K)
Thermal conductivity	k	W/(m·K)
Viscous Model
Bulk viscosity	muB	Pa·s