∇

Description

The uniformNormalFixedValue is a boundary condition that provides a uniform surface-normal vector condition by its magnitude.

Usage

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

Boundary file 

<patchName>
{
    type            patch;
    ...
}

Field file 

<patchName>
{
    // Mandatory entries
    type            uniformNormalFixedValue;
    uniformValue    <PatchFunction1<Type>>;

    // Optional entries
    ramp            <Function1<scalar>>;

    // Inherited entries
    ...
}

where:

Property Description Type Required Default
type Type name: uniformNormalFixedValue word yes -
uniformValue Patch field values PatchFunction1<Type> yes -
ramp Time-variant ramp Function1<scalar> no -

The inherited entries are elaborated in:

  • fixedValueFvPatchField.H
  • PatchFunction1.H

  • Function1.H

  • Sign conventions:
    • the value is positive for outward-pointing vectors

Further information

Tutorial:

Source code:

API:

History:

  • Introduced in version v1912