Large-eddy simulation of dispersion from surface sources in arrays of obstacles


Boppana, V.B.L., Xie, Z.T. and Castro, I.P. (2010) Large-eddy simulation of dispersion from surface sources in arrays of obstacles. Boundary-Layer Meteorology, 135, (3), 433-454. (doi:10.1007/s10546-010-9489-9).

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Description/Abstract

Towards meeting the objective of simulating heat transfer processes in urban areas, the study of dispersion from a scalar (ground) surface area source has been addressed as a first step, as dispersion from such a source is in some ways analogous to heat transfer from the surface. Two different urban-like geometries are considered in this study: an array with uniform height cubes and an array with random height cuboids. Some point measurement dispersion experiments in a wind tunnel have previously been carried out in identical arrays using a naphthalene sublimation technique. Large-eddy simulations (LES) of these experiments have been performed as a validation study and the details, presented here, demonstrate the influence of the roughness morphology on the dispersion processes and the power of LES for obtaining physically important scalar turbulent flux information.

Item Type: Article
ISSNs: 0006-8314 (print)
1573-1472 (electronic)
Keywords: area source, dispersion, passive scalar, urban canopy
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Aerodynamics & Flight Mechanics
ePrint ID: 79634
Date Deposited: 19 Mar 2010
Last Modified: 27 Mar 2014 19:01
Contact Email Address: z.xie@soton.ac.uk
URI: http://eprints.soton.ac.uk/id/eprint/79634

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