∇

Description

The uniformFixedGradient is a boundary condition that provides a uniform fixed gradient condition.

Usage

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

Boundary file 

<patchName>
{
    type            patch;
    ...
}

Field file 

<patchName>
{
    // Mandatory entries
    type            uniformFixedGradient;
    uniformGradient <Function1<Type>>;

    // Inherited entries
    ...
}

where:

Property Description Type Required Default
type Type name: uniformFixedGradient word yes -
uniformGradient Uniform gradient field Function1<Type> yes -

The inherited entries are elaborated in:

  • fixedGradientFaPatchField.H

  • Function1.H

  • The value entry (optional) is used for the initial values. Otherwise the uniformGradient is used for the evaluation. In some cases (eg, coded or expression entries with references to other fields) this can be problematic and the value entry will be needed.

Further information

Tutorial:

  • N/A

Source code:

API:

History:

  • Introduced in version v2306