MapFields to New Grid For Extreme Grid Deformations due to Body Motion
As you may know extreme mesh deformations due to body motions can result with very bad quality grids. So either one ends up with a simulation blow up or very small time steps to fulfill the CFL condition.
I have been thinking of and testing an approach that involves the following steps:
How about alternative approaches?:
Star CCM+ utilizes the over-set grid approach in which the interpolation between body-attached and stationary grids is performed at each time step. OpenFOAM does not yet have this capability forcing me to work with what we already have.
I know sliding meshes might be an alternative, but I doubt it will work for non-academic cases, that involve not so ideal convex assemblies - ie a boat with a tall mast. One would accommodate the assembly in huge (relative to boat size) spheres which slide to take care of 3DOF rotation part. I think the cost for interpolation face search would be very high in these cases...
Comments are appreciated.
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