pressureInletOutletVelocity

Description

The pressureInletOutletVelocity 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 specified inlet direction.

The tangential patch velocity can be optionally specified.

Usage

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

Boundary file

<patchName>
{
    type            patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type            pressureInletOutletVelocity;

    // Optional entries
    tangentialVelocity  <vectorField>;
    phi             <word>;

    // Inherited entries;
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: pressureInletOutletVelocity	word	yes	-
tangentialVelocity	Tangential velocity field	vectorField	no	Zero
phi	Name of flux field	word	no	phi

The inherited entries are elaborated in:

• Foam::directionMixedFvPatchField

• 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:

• TJunction

Source code:

• pressureInletOutletVelocity

API:

• Foam::pressureInletOutletVelocityFvPatchVectorField

History: Introduced in version 1.5