a Parallel Block-Structured Multigrid Method for the Prediction of Incompressible Flows
Franz Durst,Michael Schäfer +1 more
181
TL;DR: The results illustrate that the high performance of the underlying sequential multigrid algorithm can largely be retained in the parallel implementation and that the proposed method is well suited for solving complex flow problems on parallel computers with high efficiency.
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Abstract: In this paper a parallel multigrid finite volume solver for the prediction of steady and unsteady flows in complex geometries is presented. For the handling of the complexity of the geometry and for the parallelization a unified approach connected with the concept of block-structured grids is employed. The parallel implementation is based on grid partitioning with automatic load balancing and follows the message-passing concept, ensuring a high degree of portability. A high numerical efficiency is obtained by a non-linear multigrid method with a pressure correction scheme as smoother.
By a number of numerical experiments on various parallel computers the method is investigated with respect to its numerical and parallel efficiency. The results illustrate that the high performance of the underlying sequential multigrid algorithm can largely be retained in the parallel implementation and that the proposed method is well suited for solving complex flow problems on parallel computers with high efficiency.
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Citations
Numerical simulation of coupled fluid?solid problems
Michael Schäfer,Ilka Teschauer +1 more
TL;DR: In this paper, a unified finite-volume approach based on the concept of block-structured grids is employed for the handling of the complexity of the geometry and the fluid-solid coupling.
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