Thanks a lot for the reply. nLet me make things clearer.nnAs seen in the image above, there exists an oil region that I patched at the top of the channel. This droplet exists inside a plastic region.nWith the current mesh(image attached above) that I am using, there is not good enough volume conservation and I am losing mass as the oil deforms. I am thinking of alternate modes of meshing and as suggested by dynamic meshing would greatly help my case. Hence, I was thinking of setting up dynamic meshing between the oil and the plastic region, since I have to accurately predict the shape of oil droplet.nHope I am being clear enough.n