uniformFixedGradient

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:

• uniformFixedGradient

API:

• Foam::uniformFixedGradientFaPatchField

History: Introduced in version v2306