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CFD Modeling of Pollution Dispersion in a Street Canyon: Comparison between LES and RANS

Title:

CFD Modeling of Pollution Dispersion in a Street Canyon: Comparison between LES and RANS

Tominaga, Y. and Stathopoulos, T. (2011) CFD Modeling of Pollution Dispersion in a Street Canyon: Comparison between LES and RANS. Journal of Wind Engineering and Industrial Aerodynamics, 99 (4). pp. 340-348.

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Official URL: http://dx.doi.org/10.1016/j.jweia.2010.12.005

Abstract

CFD modeling using RANS and LES of pollutant dispersion in a three-dimensional street canyon is investigated by comparison with measurements. The purpose of this study is to confirm the accuracy of LES in modeling plume dispersion in a simple street canyon model and to clarify the mechanism of the discrepancy in relation to RANS computation. Simple LES modeling is shown by comparison with wind tunnel experiments to give better results than conventional RANS computation (RNG) modeling of the distribution of mean concentration. The horizontal diffusion of concentration is well reproduced by LES, mainly due to the reproduction of unsteady concentration fluctuations in the street canyon.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Article
Refereed:Yes
Authors:Tominaga, Y. and Stathopoulos, T.
Journal or Publication:Journal of Wind Engineering and Industrial Aerodynamics
Date:2011
Digital Object Identifier (DOI):10.1016/j.jweia.2010.12.005
ID Code:981685
Deposited By: THEODORE STATHOPOULOS
Deposited On:22 Nov 2016 16:30
Last Modified:18 Jan 2018 17:53
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