pressurePermeableAlphaInletOutletVelocity

Description

The pressurePermeableAlphaInletOutletVelocity is a velocity inlet/outlet boundary condition that can be applied to velocity boundaries for multiphase flows when the pressure boundary condition is specified.

In this condition , an open condition is applied when alpha is under a user-defined alphaMin value and a wall condition is applied when alpha is larger than the alphaMin.

This boundary condition can be used in conjunction with prghPermeableAlphaTotalPressure for the p_rgh variable.

Usage

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

Boundary file

<patchName>
{
    type            patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type            pressurePermeableAlphaInletOutletVelocity;

    // Optional entries
    phi             <word>;
    rho             <word>;
    alpha           <word>;
    alphaMin        <scalar>;

    // Inherited entries;
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: pressurePermeableAlphaInletOutletVelocity	word	yes	-
phi	Name of flux field	word	no	phi
rho	Name of density field	word	no	rho
alpha	Name of the mixture VOF field	word	no	none
alphaMin	Minimum alpha value to outlet blockage	scalar	no	1.0

The inherited entries are elaborated in:

• Foam::mixedFvPatchField

Further information

Tutorial:

• N/A

Source code:

• pressurePermeableAlphaInletOutletVelocity

API:

• Foam::pressurePermeableAlphaInletOutletVelocityFvPatchVectorField

History: Introduced in version v2106