Rob, I really appreciate for your reply!nAs you mentioned, this problem could be related to the system or the model set-up.nI'll continue to monitor the issues that I have in my simulation.nMeanwhile, I didn't use the remeshing method for FSI interfaces, just used deformable mesh method because I thought that the total deformation of my model would not be large manner.nCould you please notice me why you mentioned about the remeshing method?nThanks n