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Parallel Pressure Poisson Solvers for LES of Complex Geometry Flows

[+] Author Affiliations
Krishna M. Singh

Indian Institute of Technology Roorkee, Roorkee, India

Eldad J. Avital, John J. R. Williams, A. Munjiza

Queen Mary University of London, London, UK

C. Ji

Tianjin University, Tianjin, China

Paper No. AJKFluids2015-29748, pp. V001T29A003; 7 pages
  • ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
  • Volume 1: Symposia
  • Seoul, South Korea, July 26–31, 2015
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5721-2
  • Copyright © 2015 by ASME


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.

Copyright © 2015 by ASME



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