acousticWaveTransmissive

Description

The acousticWaveTransmissive boundary condition provides a wave transmissive outflow condition by solving the following governing equation at the boundary:

$$\frac{D \, W f}{D t} = 0$$

where $W$ represents the wave speed and $f$ corresponds to the field to which this boundary condition is applied.

Usage

The condition requires entries in both the boundary and field files.

Boundary file

<patchName>
{
    type                patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type                acousticWaveTransmissive;
    advectiveSpeed      <scalar>;

    // Inherited entries
    ...
}

Property	Description	Type	Required	Default
type	Type name: acousticWaveTransmissive	word	yes	-
advectiveSpeed	Advective speed value	scalar	yes	-

The inherited entries are elaborated in:

• Foam::advectiveFvPatchField

Further information

Tutorial:

• obliqueAirJet

Source code:

• Foam::acousticWaveTransmissiveFvPatchField

History: Introduced in version 1.5 ]