A multiresolution remeshed Vortex-In-Cell algorithm using patches

Johannes Tophøj Rasmussen, Georges-Henri Cottet, Jens Honore Walther

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We present a novel multiresolution Vortex-In-Cell algorithm using patches of varying resolution. The Poisson equation relating the fluid vorticity and velocity is solved using Fast Fourier Transforms subject to free space boundary conditions. Solid boundaries are implemented using the semi-implicit formulation of Brinkman penalization and we show that the penalization can be carried out as a simple interpolation. We validate the implementation against the analytic solution to the Perlman test case and by free-space simulations of the onset flow around fixed and rotating circular cylinders and bluff body flows around bridge sections.
Original languageEnglish
JournalJournal of Computational Physics
Volume230
Issue number17
Pages (from-to)6742-6755
ISSN0021-9991
DOIs
Publication statusPublished - 2011

Keywords

  • Vortex-In-Cell algorithm
  • Bridge aerodynamics
  • Multiresolution
  • Brinkman penalization
  • Patches
  • Fixed and rotating cylinder

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