Simulation of flow past a square cylinder by parallel lattice Boltzmann method using multi-relaxation-time scheme

Jong-Shinn Wu*, Y. L. Shao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The flows past a square cylinder in a channel are simulated using the multi-relaxation-time (MRT) model in the parallel lattice Boltzmann BGK method (LBGK). Reynolds numbers of the flow are in the range of 100 - 1,850 with blockage ratio, 1/6, of cylinder height to channel height, in which the single-relaxation-time (SRT) scheme is not able to converge at higher Reynolds numbers. Computed results are compared with those obtained using the SRT scheme where it can converge. In addition, computed Strouhal numbers compare reasonably well with the numerical results of Davis (1984).

Original languageEnglish
Pages (from-to)35-42
Number of pages8
JournalJournal of Mechanics
Volume22
Issue number1
DOIs
StatePublished - 1 Jan 2006

Keywords

  • D2Q9 model
  • Lattice boltzmann method
  • Multi-relaxation-time
  • Single-relaxation-time
  • Strouhal number

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