An Extension of Explicit Coupling for Fluid–Structure Interaction Problems

We present an extension of a non-iterative, partitioned method previously designed and used to model the interaction between incompressible, viscous fluid thick elastic structure. The original is based on Robin boundary conditions it features easy implementation unconditional stability. However, sub-optimally accurate in time, yielding only O(Δt12) rate convergence. In this work, we propose improve sub-optimal accuracy. analyze stability properties proposed method, showing that stable under certain conditions. accuracy are computationally investigated, significant improvement when compared scheme, excellent properties. Furthermore, since depends combination parameter conditions, whose values problem specific, suggest investigate formulas according which can be determined.