Model sensitivity test of large eddy simulation for wind flow and pollutant dispersion in a street canyon

Afiq Witri Muhammad Yazid, Nor Azwadi Che Sidik, Salim Mohamed Salim, Shuhaimi Mansor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper reports on the model sensitivity analysis of a commercial computational fluid dynamics program, ANSYS FLUENT v14. The purpose of the analysis was to determine the appropriate modeling settings for numerical model of the case study. A full scale of a simplified urban street canyon was modelled and the turbulent flow was calculated using Large Eddy Simulation (LES) techniques. The model sensitivity tests involved are mesh sensitivity, statistically steady state and sampling. Adequate numbers of cells, period time to achieve statistically steady state (SST) and sampling time to simulate wind flow and pollutantdispersion in street canyon were determined through systematic tests.

Original languageEnglish
Title of host publicationApplied Mechanics and Materials
PublisherTrans Tech Publications
Pages562-566
Number of pages5
Volume695
ISBN (Print)9783038353393
DOIs
Publication statusPublished - 1 Jan 2015
EventWorld Virtual Conference on Advanced Research in Materials and Engineering Applications - Kuala Lumpur, United Kingdom
Duration: 22 Sep 201426 Sep 2014

Publication series

NameApplied Mechanics and Materials
Volume695
ISSN (Print)16609336
ISSN (Electronic)16627482

Conference

ConferenceWorld Virtual Conference on Advanced Research in Materials and Engineering Applications
CountryUnited Kingdom
CityKuala Lumpur
Period22/09/1426/09/14

Keywords

  • LES
  • Model sensitivity
  • Pollutant dispersion
  • Street canyon
  • Wind flow structures

ASJC Scopus subject areas

  • Engineering(all)

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