mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-11-28 03:28:01 +00:00
1ed3fcd4c0
- serves as a pre-processor for PDRblockMesh. Scans obstacles to determine an initial cell distribution for PDRblockMesh
106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
/*--------------------------------*- C++ -*----------------------------------*\
|
|
| ========= | |
|
|
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
|
|
| \\ / O peration | Version: v2012 |
|
|
| \\ / A nd | Website: www.openfoam.com |
|
|
| \\/ M anipulation | |
|
|
\*---------------------------------------------------------------------------*/
|
|
FoamFile
|
|
{
|
|
version 2.0;
|
|
format ascii;
|
|
class dictionary;
|
|
object PDRfitMeshDict;
|
|
}
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
// Settings for PDRfitMesh
|
|
|
|
cellWidth 0.22;
|
|
|
|
// Tuning parameters (defaults) for PDRfitMesh
|
|
|
|
bounds
|
|
{
|
|
// xmin -1e16;
|
|
// xmax 1e16;
|
|
//
|
|
// ymin -1e16;
|
|
// ymax 1e16;
|
|
//
|
|
// zmin -1e16;
|
|
// zmax 1e16;
|
|
}
|
|
|
|
|
|
findPlanes
|
|
{
|
|
// A face smaller than this multiple of cell face area will not be
|
|
// recorded
|
|
minSigFaceArea 5;
|
|
|
|
// Only fit a plane if the face area at the coordinate is at least
|
|
// this times the cell face area
|
|
minAreaRatio 20.0;
|
|
|
|
// Size of search zones for face areas will be this * the cell width.
|
|
// So faces closer than this zone size might be grouped together
|
|
areasetWidthFactor 0.7;
|
|
|
|
// Very long zones produce bad outer boundary shape from
|
|
// makePDRmeshBlocks, so we subdivide a zone if its length is greater
|
|
// than this * the height of the area of cuboid vells
|
|
//
|
|
maxRatioZoneToH 2.0 ;
|
|
}
|
|
|
|
|
|
/****************** Choosing cell width ***************/
|
|
|
|
// Note "cellWidth" and "cellWidthFactor" are read from PDRsetFieldsDict
|
|
// cellWidth
|
|
// {
|
|
// }
|
|
|
|
// Note "cellWidth" and "cellWidthFactor" are read from PDRsetFieldsDict
|
|
grid
|
|
{
|
|
auto true;
|
|
width 0;
|
|
max great;
|
|
}
|
|
|
|
|
|
// Width of obstacles must be less than this * cell width to added
|
|
// into subgrid length
|
|
widthFactor 1.0;
|
|
|
|
// Optimal average number of obstacles per cell
|
|
obsPerCell 2.0;
|
|
|
|
// Minimum number of cells in any direction
|
|
minStepsPerDim 10;
|
|
|
|
// Do not try a cell width more than this times the initial estimate
|
|
maxCwToEst 5.0;
|
|
|
|
// Assume converged if optimised width changes by less than this
|
|
maxWidthRatio 1.2;
|
|
|
|
// Maximum iterations in optimizing cell width
|
|
maxPasses 5;
|
|
|
|
|
|
/****************** Defining outer expanding region ***************/
|
|
|
|
// Number of rectangular cell layers each side of the congested region. (double, not int)
|
|
nEdgeLayers 5.0;
|
|
|
|
// Ratio of the outer extension distance to the average radius of the congested region
|
|
ratioOuterToCongRad 20.0;
|
|
|
|
// Cell size ratio - should be same as that hard-wired in makePDRmeshBlocks
|
|
outerRatio 1.2;
|
|
|
|
|
|
// ************************************************************************* //
|