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-   -   dynamicMesh parallel run (http://www.cfd-online.com/Forums/openfoam-solving/107608-dynamicmesh-parallel-run.html)

popcorn October 2, 2012 12:34

dynamicMesh parallel run
 
Dear all,

im a student and facing a refinement problem with the interDyMFoam during a parallel run.

In the single run, the refinement utility works fine, as the mesh is only refined up to a refinement level of 3 according to the dynamicMeshDict (maxRefinement = 3). Areas in the mesh with a higher refinement level, e.g. around a snapped geometry, are not refined and keep their refinement level.
http://www.cfd-online.com/Forums/ima...ons/icon14.gif

But in the parallel run, the dynamicmesh works differently! Suddenly all areas in the mesh are refined with 3 refinement level addtionally. So the area around my snapped geometry with a refinement level of 4 gets an enormous refinement level of 7 :confused: This leads to millions of unnecessary cells around my snapped geometry and the simulation time explodes to infinity. :(



Unfortunately I need a high refinement level at the beginning to snapp the geometry correctly...


I guess there must be something wrong with the decomposePar-operation. So i checked my decomposeParDict and tried different operations (e.g. decomposePar-copyUniform) , but no success.




Thanks in advance for your help...





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