Partitioned FSI strategy for simulations of a thin elastic valve

We present a Fictitious Domain (FD)/Lagrange multiplier method to approximate a thin valve movement immersed in an incompressible fluid. We developed a partitioned FSI algorithm that is able to keep the fluid and structure codes independent and which involve only minor modifications to each one . We propose a quantitative comparison between FD and ALE, when the displacement is moderated. We show that the two approaches give results in good agreement. We also illustrate FD in a simulation involving very large displacements