Volumetric Drag

The volumetric drag coefficient can be used to model the effects of dissipation of energy and attenuation of acoustic waves in an acoustic medium.

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Volumetric Drag
Input Data Description
Volumetric Drag Volumetric drag coefficient, γ , for the acoustic medium in terms of force per unit volume per velocity.
Include frequency-dependent data Select this option and specify a value in the Frequency column for each frequency-dependent instance of volumetric drag that you specify in the table.
Use temperature-dependent data Specifies material parameters that depend on temperature. A Temperature field appears in the data table. For more information, see Specifying Material Data as a Function of Temperature and Independent Field Variables.
Number of field variables Specify material parameters that depend on field variables. Field columns appear in the data table for each field variable you add. For more information, see Specifying Material Data as a Function of Temperature and Independent Field Variables.