A Class of Fluid-Structure Interaction Solvers with a Nearly Incompressible Elasticity Model
Dr. Huidong YangJan. 10, 2012, 2:30 p.m. S2 046
In this paper, we present some numerical studies on two partitioned uid-structure interaction solvers: a preconditioned GMRES solver and a Newton based solver, for the uid-structure interaction problems employing a nearly incompressible elasticity model in a classical mixed displacement-pressure formulation. Both are highly relying on robust and efficient solvers for the uid and the structure sub-problems obtained from an extended and stabilized finite element discretization on hybrid meshes. For solving the sub-problems, a special algebraic multigrid method capable of handling a general saddle point system arising from the incompressible and nearly incompressible sub-problems is investigated.