we have a problem with mesh motion in OpenFOAM (for FSI applications with CalculiX), especially when the fluid mesh is to be compressed into a gap by displacing the solid domain.
Here, the displacementLaplacian displacement approach in OpenFOAM shows a strong compression of individual cells in the domain in a wave-like structure up to the crash. I use hex grids and planar simulations. I have encountered this problem frequently and I wonder if anyone has already found a solution for a better mesh motion in OpenFOAM for cases like this.
Dear Makis, thanks a lot. I will try this. I tried meanwhile SBRStress solver which is directly available in OpenFOAM.The SBRStress solver gives also a pretty nice mesh with good orthogonality. But I’m not yet at the end of my mesh desired compression. I will check out which solver then allows the highest grid compression.