alphatWallFunctionFvPatchScalarField.md

alphatWallFunctionFvPatchScalarField

Class

Foam::compressible::alphatWallFunctionFvPatchScalarField

Group

grpCmpWallFunctions

Description

This boundary condition provides a turbulent thermal diffusivity conditon when using wall functions

• replicates OpenFOAM v1.5 (and earlier) behaviour

The turbulent thermal diffusivity calculated using:

    \f[
        \alpha_t = \frac{\mu_t}{Pr_t}
    \f]

where

\vartable \alpha_t| turblence thermal diffusivity \mu_t | turblence viscosity Pr_t | turblent Prandtl number \endvartable

Usage

    Property     | Description             | Required    | Default value
    nut          | turbulence viscosity field name | no  | nut
    Prt          | turbulent Prandtl number | no          | 0.85

Example of the boundary condition specification:

<patchName>
{
        type            alphatWallFunction;
        nut             nut;
        Prt             0.85;
        value           uniform 0; // optional value entry
}

See also

Foam::fixedValueFvPatchField

SourceFiles

alphatWallFunctionFvPatchScalarField.C