Large-eddy simulation of dispersion from surface sources in arrays of obstacles
Large-eddy simulation of dispersion from surface sources in arrays of obstacles
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.
area source, dispersion, passive scalar, urban canopy
433-454
Boppana, V.B.L.
817ed7fa-d262-451f-a442-ee8c9b8a2cb0
Xie, Z.T.
98ced75d-5617-4c2d-b20f-7038c54f4ff0
Castro, I.P.
66e6330d-d93a-439a-a69b-e061e660de61
1 June 2010
Boppana, V.B.L.
817ed7fa-d262-451f-a442-ee8c9b8a2cb0
Xie, Z.T.
98ced75d-5617-4c2d-b20f-7038c54f4ff0
Castro, I.P.
66e6330d-d93a-439a-a69b-e061e660de61
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), .
(doi:10.1007/s10546-010-9489-9).
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.
Text
blm10.pdf
- Author's Original
More information
Accepted/In Press date: 27 October 2009
e-pub ahead of print date: 8 April 2010
Published date: 1 June 2010
Keywords:
area source, dispersion, passive scalar, urban canopy
Organisations:
Aerodynamics & Flight Mechanics
Identifiers
Local EPrints ID: 79634
URI: http://eprints.soton.ac.uk/id/eprint/79634
ISSN: 0006-8314
PURE UUID: f34c9748-b636-4200-b7a9-73f7e62b17c0
Catalogue record
Date deposited: 19 Mar 2010
Last modified: 14 Mar 2024 02:49
Export record
Altmetrics
Contributors
Author:
V.B.L. Boppana
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
