FreeFOAM The Cross-Platform CFD Toolkit
splitMeshRegions.C File Reference

Splits mesh into multiple regions. More...


Detailed Description

Splits mesh into multiple regions.

Each region is defined as a domain whose cells can all be reached by cell-face-cell walking without crossing

  • boundary faces
  • additional faces from faceset (-blockedFaces faceSet).
  • any face inbetween differing cellZones (-cellZones)

Output is:

  • volScalarField with regions as different scalars (-detectOnly) or
  • mesh with multiple regions or
  • mesh with cells put into cellZones (-makeCellZones)
Note:
  • cellZonesOnly does not do a walk and uses the cellZones only. Use this if you don't mind having disconnected domains in a single region. This option requires all cells to be in one (and one only) cellZone.
  • cellZonesFileOnly behaves like -cellZonesOnly but reads the cellZones from the specified file. This allows one to explicitly specify the region distribution and still have multiple cellZones per region.
  • useCellZonesOnly does not do a walk and uses the cellZones only. Use this if you don't mind having disconnected domains in a single region. This option requires all cells to be in one (and one only) cellZone.
  • Should work in parallel. cellZones can differ on either side of processor boundaries in which case the faces get moved from processor patch to directMapped patch. Not very well tested.
  • If a cell zone gets split into more than one region it can detect the largest matching region (-sloppyCellZones). This will accept any region that covers more than 50% of the zone. It has to be a subset so cannot have any cells in any other zone.
  • writes maps like decomposePar back to original mesh:
  • pointRegionAddressing : for every point in this region the point in the original mesh
  • cellRegionAddressing : ,, cell,, cell,,
  • faceRegionAddressing : ,, face,, face in the original mesh + 'turning index'. For a face in the same orientation this is the original facelabel+1, for a turned face this is -facelabel-1
Usage
  • splitMeshRegions [OPTIONS]
Parameters:
-cellZones
Split different cell zones.
-detectOnly
Do no processing.
-blockedFaces<faceSet name>
Split at give face set.
-sloppyCellZones
Try to match regions to existing cell zones.
-makeCellZones
Create mesh with cells in different cell zones.
-overwrite
Overwrite existing data.
-case<dir>
Case directory.
-parallel
Run in parallel.
-help
Display help message.
-doc
Display Doxygen API documentation page for this application.
-srcDoc
Display Doxygen source documentation page for this application.
-insidePoint<point>
Only keep region containing specified point.
-largestOnly
Only keep largest region.

Definition in file splitMeshRegions.C.

+ Include dependency graph for splitMeshRegions.C:

Go to the source code of this file.