The Numerical Simulation of Large-Scale Fluid-Structure Interaction Problems in a Fully Coupled Form

Abstract

ical Galerkin finite element is used to discretize the governing equations in a Lagrangian frame. The time integration method for the structure domain is based on the Newmark type generalized−α method while the first-order backward difference is used in the fluid domain. The implementation of the preconditioned coupled iterative solvers is based on the PETSc library for improving the efficiency of the parallel code. The present numerical algorithm is validated for a steady and unsteady Newtonian fluid interacting with an elastic rectangular bar behind a circular cylinder and a three-dimensional elastic solid confined in a rectangular channel.