the problem on density ratio in icoFsiFoam with weakly coupling
I'm trying to test a case of a cantileiver column using the tutorial of the icoFsiFoam solver in openfoam 1.5x.
icoFsiFoam is known as the solver of Fluid-Strucutre Interactions with weakly coulping.
I would like to know why FSI solver with weakly couping leads to a serious divergence problem when densities between strucuture and fluid are similar or, in other words, desitiy ratio (strucuture/fluid) is high.
If you know some hints and thesises on it, your comments are greatly appreciated.
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