Description🔗

The fixedInternalValue is a general boundary condition to provide a mechanism to set boundary (cell) values directly into a matrix, i.e. to set a constraint condition. Default behaviour is to act as a zero 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                    fixedInternalValue;

    // Inherited entries
    ...
}

where:

The inherited entries are elaborated in:

• Foam::zeroGradientFvPatchField

Further information🔗

Tutorial:

• N/A

Source code:

• $FOAM_SRC/finiteVolume/fields/fvPatchFields/derived/fixedInternalValueFvPatchField

API:

• Foam::fixedInternalValueFvPatchField

History:

• Introduced in version 1.5