A velocity scale would help, but the odd graphic effect in 1) about half way between the elipse & wall suggests something mesh related. Check the contact/transfer/overset cells, and in 3) & 4) see if they tie up with the anomally in the flow it's mesh related. That could just be the time step is too big: run a model with a fixed mesh and move the fluid to see if anything unexpected is happening.Â
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