Parallel 3D computation of unsteady flows around circular cylinders

V. Kalro, T. Tezduyar

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

In this article we present parallel 3D finite element computation of unsteady incompressible flows around circular cylinders. We employ stabilized finite element formulations to solve the Navier-Stokes equations on a thinking machine CM-5 supercomputer. The time integration is based on an implicit method, and the coupled, nonlinear equations generated every time step are solved iteratively, with an element-vector based evaluation technique. This strategy enables us to carry out these computations with millions of coupled, nonlinear equations, and thus resolve the flow features in great detail. At Reynolds number 300 and 800, our results indicate strong 3D features arising from the instability of the columnar vortices forming the Karman street. At Re = 10 000 we employ a large eddy simulation (LES) turbulence model.

Original languageEnglish
Pages (from-to)1235-1248
Number of pages14
JournalParallel Computing
Volume23
Issue number9
DOIs
Publication statusPublished - 1997 Sep

Keywords

  • 3D cylinder flows
  • LES
  • Large-scale problems
  • Parallel computations

ASJC Scopus subject areas

  • Software
  • Theoretical Computer Science
  • Hardware and Architecture
  • Computer Networks and Communications
  • Computer Graphics and Computer-Aided Design
  • Artificial Intelligence

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