Domain decomposition solution of incompressible flows using unstructured grids with pP2P1 elements

Edis F., Gulcat U., Aslan A.

11th International Conference on Parallel Computational Fluid Dynamics (Parallel CFD 99), Virginia, United States Of America, 23 - 26 May 1999, pp.207-214 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Virginia
  • Country: United States Of America
  • Page Numbers: pp.207-214
  • Istanbul Technical University Affiliated: No

Abstract

Parallel implementation of a fractional step time discretization Finite Element scheme using pseudo-quadratic velocity/linear pressure interpolation tetrahedral elements is presented. An iterative non-overlapping domain decomposition technique is utilized for the distributed solution of the Poisson's equation for the pressure. pP2P1 elements are especially attractive within this scheme as the number of pressure elements are far lower than the number of velocity elements, yielding a better efficiency for the parallelization of the Poisson's solver. The superlinear speed up is achieved between the 2 and 4 domain lid driven cavity solutions.