Parallel Two-Level Overlapping Schwarz Methods in Fluid-Structure Interaction
نویسندگان
چکیده
Parallel overlapping Schwarz preconditioners are considered and applied to the structural block in monolithic fluid-structure interaction (FSI). The two-level overlapping Schwarz method uses a coarse level based on energy minimizing functions. Linear elastic as well as nonlinear, anisotropic hyperelastic structural models are considered in an FSI problem of a pressure wave in a tube. Using our recent parallel implementation of a two-level overlapping Schwarz preconditioner based on the Trilinos library, the total computation time of our FSI benchmark problem was reduced by more than a factor of two compared to the algebraic onelevel overlapping Schwarz method used previously. Finally, also strong scalability for our FSI problem is shown for up to 512 processor cores. 1 The Two-Level Overlapping Schwarz Preconditioner The GDSW preconditioner [4] is a two-level additive Schwarz preconditioner M GDSW = Φ ( ΦAΦ ) −1 Φ + N
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