I am developping a library of mesh mover for FSI, but I got some problem to keep valid mesh for movement of high lift components of aircraft (from takeoff to cruise). I use an interpolation function (IDW) to move the mesh but when two bodies are close of each other the mesh in between get distorted to generate negative elements.
I think you are solving a CFD problem with "Moving meshes". In such a case, you meshes need to be "regenerated" at every time step. You cannot simply keep "valid mesh" for the entire simulation. In such a case, you can restructure your mesh so that no distortion occurs. The motion of the solid bodies must play an important role in the mesh restructuring.
Regards...
Lattice Boltzmann currently has acquired a lot of attention , because it overcomes the problems of the structure complexity . and can be used as long as you are working in the low mach number region.
To my knowledge there are currently only 2 possible ways of ensuring mesh quality: remeshing or multiple configurations (like in combustion engine simulation).
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