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April 14, 2012, 13:51
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very fragile mesh motion on SnappyHexMesh generated mesh
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Member
matteo lombardi
Join Date: Apr 2009
Posts: 58
Rep Power: 6  |
Hello,
i am trying to simulate the motion of a boat under the hydrodynamic forces, at the moment just sink & trim DoF, using a mesh generated by SnappyHexMesh (no prism layers). As motion solver I am using laplaceFaceDecomposition with quadratic inverse distance motion diffusivity. After a very small motion (less than 1 degree rotation and small sink), the mesh becomes invalid. I have some negative volume cells, inverse pyramids, etc etc... Is it my fault somehow, or are the SHM meshes too "fragile" to be moved by laplace-based motion solvers? What is your experience with moving SHM meshes ? Thanks, matteo |
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