pressureNormalInletOutletVelocity

Description

The pressureNormalInletOutletVelocity is a velocity inlet/outlet boundary condition that applies a zero-gradient condition for outflow (as defined by the flux); and obtains velocity from the flux with a direction normal to the patch faces.

Usage

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

Boundary file

<patchName>
{
    type            patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type            pressureNormalInletOutletVelocity;

    // Optional entries
    phi             <word>;
    rho             <word>;

    // Inherited entries;
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: pressureNormalInletOutletVelocity	word	yes	-
phi	Name of flux field	word	no	phi
rho	Name of density field	word	no	rho

The inherited entries are elaborated in:

• Foam::mixedFvPatchField

• Sign conventions:
  • positive flux (out of domain): apply zero-gradient condition
  • negative flux (into of domain): derive from the flux with specified

direction

Further information

Tutorial:

• N/A

Source code:

• pressureNormalInletOutletVelocity

API:

• Foam::pressureNormalInletOutletVelocityFvPatchVectorField

History: Introduced in version 1.6