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-   -   dual mesh (http://www.cfd-online.com/Forums/openfoam/90172-dual-mesh.html)

nimasam July 3, 2011 05:48

dual mesh
 
hi foamer
i have a general question! is it possible to have dual mesh in one geometry?
i want to solve u and p in coarse grid and solve alpha in very fine grid to have very accurate interface,
any hint?

su_junwei July 3, 2011 11:47

You can do so with OpenFOAM. However, you havo to do fileld at different time step. When do the map, use meshToMesh class.

Regarding use two diffent meshes within one solver, just see the chtMultiRegionFoam solver.

Regards, Junwei

flowman July 3, 2011 19:57

From what you've said, I'm guessing you are using interFoam. Why not use interDyMFoam to adapt the mesh at the interface to keep it sharp?

nimasam July 4, 2011 11:44

thank you! i have used interDyMFoam before hand, actually i used a modified version of interFoam with dynamic mesh which considers boiling, but as the interface is diffuse the number of cells get too high and it needs dynamic mesh refinement in every iteration which is time consuming! so i guess maybe there is a way to handle dual mesh simultaneously a coarse mesh for u and p and a finer mesh for alpha1


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