Creates view factors to be used in the view-factor radiation model. More...

Detailed Description

Creates view factors to be used in the view-factor radiation model.

Original source file createViewFactors.C

Operands:

Operand	Type	Location
`input`	dictionary	<constant>/viewFactorsDict
`input`	dictionary	<constant>/finalAgglom
`output`	scalarListList	<constant>/F
`output`	mapDistribute	<constant>/mapDist
`output`	labelListList	<constant>/globalFaceFaces
`output`	volScalarField	<time>/viewVectorField
`output`	OBJ	allVisibleFaces.obj

where the dictionaries mean:

Dictionary	Description
`viewFactorsDict`	Main-control dictionary
`finalAgglom`	(Optional) Agglomeration addressing (from faceAgglomerate)
`F`	View factors (matrix)
`mapDist`	Map used for parallel running
`globalFaceFaces`	Face addressing
`viewVectorField`	View factors as a volume field
`allVisibleFaces.obj`	The visualisation of the rays

Usage

Minimal example in <constant>/viewFactorsDict:

// Inherited entries
raySearchEngine     <word>;
agglomerate         <bool>;
nRayPerFace         <label>;
writeViewFactors    <bool>;
writeRays           <bool>;
...

where the entries mean:

Property	Description	Type	Reqd	Deflt
`raySearchEngine`	Ray search engine type	word	yes	-
`agglomerate`	Flag to agglomeration	bool	yes	-
`nRayPerFace`	Number of rays issued per face	label	yes	-
`writeViewFactors`	Flag to write the view factor field	bool	yes	-
`writeRays`	Flag to write the ray geometry	bool	no	false

Options for the raySearchEngine entry:

      voxel    | Ray search engine discretising space into uniform voxels

The inherited entries are elaborated in:

Note

Participating patches must be in the vewFactorWall group, i.e. using the inGroups entry of the "\<case\>/polyMesh/boundary" file.

myPatch
{
    type            wall;
    inGroups        2(wall viewFactorWall);
    ...
}

Reads:

<constant>/viewFactorsDict : main controls
<constant>/finalAgglom : agglomeration addressing (from faceAgglomerate)

Generates:

<constant>/F : view factors (matrix)
<constant>/mapDist : map used for parallel running
<constant>/globalFaceFaces : face addressing

See also

Foam::VF::raySearchEngine
Foam::VE::viewFactorModel

Definition in file createViewFactors.C.