nutkFilmWallFunction

Description

The nutkFilmWallFunction is boundary condition that provides a turbulent viscosity condition when using wall functions, based on turbulence kinetic energy, for use with surface film models.

Usage

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

Boundary file

<patchName>
{
    type            patch;
    ...
}

Field file

<patchName>
{
    // Mandatory entries
    type            nutkFilmWallFunction;

    // Optional entries
    filmRegion      <word>;
    B               <scalar>;
    yPlusCrit       <scalar>;

    // Inherited entries
    ...
}

where:

Property	Description	Type	Required	Default
type	Type name: nutkFilmWallFunction	word	yes	-
B	B coefficient	scalar	no	5.5
yPlusCrit	y+ value for laminar -> turbulent transition	scalar	no	11.05

The inherited entries are elaborated in:

• nutkWallFunctionFvPatchScalarField.H

Further information

Tutorial:

• hotBoxes

Source code:

• nutkFilmWallFunction

API:

• Foam::compressible::RASModels::nutkFilmWallFunctionFvPatchScalarField

History: Introduced in version 2.0.0