∇

Description

The alphatJayatillekeWallFunction is a boundary condition that provides a thermal wall function for turbulent thermal diffusivity (usually alphat) based on the Jayatilleke model.

Usage

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

Boundary file 

<patchName>
{
    type            patch;
    ...
}

Field file 

<patchName>
{
    // Mandatory entries
    type            compressible::alphatJayatillekeWallFunction;

    // Optional entries
    Prt             <scalar>;
    kappa           <scalar>;
    E               <scalar>;

    // Inherited entries
    ...
}

where:

Property Description Type Required Default
type Type name: compressible::alphatJayatillekeWallFunction word yes -
Prt Turbulent Prandtl number scalar no 0.85
kappa von Karman constant scalar no 0.41
E Wall roughness parameter scalar no 9.8

The inherited entries are elaborated in:

  • fixedValueFvPatchField.H

Further information

Tutorial:

Source code:

API:

History:

  • Introduced in version v2206