Directional mesh-wave wall distance

Properties

directionalMeshWave is a variant of meshWave distance-to-patch calculation method, with which the distance component in a specified direction can be ignored, e.g. the distance-to-patch can be computed in the wall-normal direction only.

For a given point within a given mesh, the existing meshWave method gives the orthogonal distance to a specified patch. In meshes with very steep terrain (e.g. a hill of 90 [deg]), this might be problematic for the fields that require the distance to the patch associated with the terrain surface.

An example of directionalMeshWave output in terms of the wall distance can be seen as follows:

Usage

Example specification of directionalMeshWave method in system/fvSchemes.wallDist:

wallDist
{
    // Mandatory entries (unmodifiable)
    method      directionalMeshWave;
    normal      (0 0 1);

    // Optional (inherited) entries (unmodifiable)
    ...
}

Property	Description	Type	Required	Default
method	Method name: directionalMeshWave	word	yes	-
normal	The direction component to ignore	vector	yes	-

The inherited entries are elaborated in:

• meshWavePatchDistMethod

Further information

Tutorial:

• SnakeRiverCanyon

Source code

• Foam::patchDistMethods::directionalMeshWave

History: Introduced in version v2006