Comparison of les and durbin type k-ε model for gas diffusion in weak wind region behind a building

Taichi Shirasawa, Yoshinobu Endo, Ryuichiro Yoshie, Akashi Mochida, Hideyuki Tanaka

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Flow and diffusion fields around a building were predicted by LES and Durbin type k-ε model. The prediction accuracy of the both models was assessed by comparing their results with those obtained by wind tunnel test. The results of LES showed good agreement with experimental data in terms of mean wind velocity, turbulence statistics and mean gas concentration, while the significant differences were observed between the results of the experiment and the Durbin type k-ε model concerning the flow and diffusion fields in the wake region behind the building. This is mainly due to the fact that the periodic motions caused by the vortex shedding were not reproduced by this model.

Original languageEnglish
Pages (from-to)615-622
Number of pages8
JournalJournal of Environmental Engineering
Volume73
Issue number627
DOIs
Publication statusPublished - 2008 May

Keywords

  • High rise building
  • Large eddy simulation
  • Pollutant diffusion
  • Turbulent diffusion flux
  • Vortex shedding
  • Wind tunnel experiment

ASJC Scopus subject areas

  • Environmental Engineering

Fingerprint Dive into the research topics of 'Comparison of les and durbin type k-ε model for gas diffusion in weak wind region behind a building'. Together they form a unique fingerprint.

Cite this