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Simulation of Near-field Dispersion of Pollutants Using Detached-Eddy Simulation

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Simulation of Near-field Dispersion of Pollutants Using Detached-Eddy Simulation

Lateb, M., Masson, C., Stathopoulos, T. and Bedard, C. (2014) Simulation of Near-field Dispersion of Pollutants Using Detached-Eddy Simulation. Computers & Fluids, 100 (5). pp. 308-320.

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Official URL: http://dx.doi.org/10.1016/j.compfluid.2014.05.024

Abstract

A numerical simulation is developed using the unsteady-state turbulence model on a structured highly refined grid to predict the wind-flow field and dispersion field of a pollutant emitted from a rooftop stack around a two-building configuration. The results obtained are compared with those of a steady-state model previously reported by the authors. The pollutant concentrations are examined on the roof where the stack is located as well as on the leeward wall of an upstream tower to the emitting building in order to evaluate how the pollutant is dispersed by the DES model compared to RNG model. DES results are discussed against those from RNG k–ε approach and wind tunnel. The study emphasises limits in reproducing correctly the wind flow and dispersion fields due to underestimation and/or overestimation of the Reynolds stress components and the steady-state methodology when using the RNG k–ε model. Despite such limits, the RNG model produces a similar average error, in terms of concentrations, to that obtained with the DES model.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Article
Refereed:Yes
Authors:Lateb, M. and Masson, C. and Stathopoulos, T. and Bedard, C.
Journal or Publication:Computers & Fluids
Date:2014
Digital Object Identifier (DOI):10.1016/j.compfluid.2014.05.024
ID Code:981662
Deposited By: THEODORE STATHOPOULOS
Deposited On:20 Sep 2016 15:25
Last Modified:18 Jan 2018 17:53
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