Node240 - CFD SUPPORT

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Mesh refinement using refineMesh utility

Very coarse mesh was used in previous case
Refine current mesh using refineMesh utility
First, delete all time directories (except for 0 )
Utility refineMesh can refine the mesh
New refined mesh is placed into a new time directory
refineMesh can be used directly using default set up (in controlDict set startFrom to latestTime):
# refineMesh
# refineMesh
# paraFoam

Figure: Original mesh, one refinement, two refinements

Mesh can be refined locally using refineMesh with dictionary system/refineMeshDict e.g.:
# cp $FOAM_APP/utilities/mesh/manipulation/refineMesh/\ refineMeshDict ./system/
In file system/refineMeshDict can be specified the name of the cell set (rotor) to be refined:

// Cells to refine; name of cell set
set rotor;

Figure: Original mesh, one refinement, two refinements

// List of directions to refine, if global or patchLocal
directions
(
//    tan1
//    tan2
    normal
);

Run refineMesh (two times):
# rm -rf 0.00*
# refineMesh -dict system/refineMeshDict
# topoSet
# refineMesh -dict system/refineMeshDict
# checkMesh
# paraFoam
It is recommended to use checkMesh to make sure no errors were made during the refinement

Figure: Original mesh, one refinement, two refinements

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