This paper presents an assessment of performance of parallel pre-conditioners for BICGSTAB solver for numerical solution of the pressure Poisson equation arising in large eddy simulation of turbulent incompressible flows. We explore the performance of geometric multigrid pre-conditioner for the non-uniform grid and compare its performance with additive Schwarz pre-conditioner, Jacobi and SOR(k) pre-conditioners. Numerical experiments have been performed for a wide range of non-uniformity (stretching) of the grid. The fictitious domain geometric multigrid preconditioner shows the best performance followed by the SOR(k) preconditioner.
Parallel Pressure Poisson Solvers for LES of Complex Geometry Flows
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Singh, KM, Avital, EJ, Williams, JJR, Ji, C, & Munjiza, A. "Parallel Pressure Poisson Solvers for LES of Complex Geometry Flows." Proceedings of the ASME/JSME/KSME 2015 Joint Fluids Engineering Conference. Volume 1: Symposia. Seoul, South Korea. July 26–31, 2015. V001T29A003. ASME. https://doi.org/10.1115/AJKFluids2015-29748
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