Numerical simulation and wind tunnel studies of pollution dispersion in an isolated street canyon
by Seema Awasthi, K.K. Chaudhry
International Journal of Environment and Waste Management (IJEWM), Vol. 4, No. 1/2, 2009

Abstract: A three dimensional numerical modelling study of an urban isolated street canyon are done using Computational Fluid Dynamics (CFD) software FLUENT. The concentration predictions of FLUENT are compared with the Environmental Wind Tunnel (EWT) test results conducted at Indian Institute of Technology, Delhi for the Aspect Ratio (AR) of 1 and 1.5 at perpendicular wind direction. In FLUENT, three different k–ε turbulence models, i.e., standard, Renormalisation Group (RNG) and realisable, are used. RNG model has been found to be best matched with the wind tunnel results (d = 0.80) for AR = 1, showing that for separated flows, it works best.

Online publication date: Sun, 28-Jun-2009

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