Dispersion from elevated sources above obstacle arrays: modelling requirements Online publication date: Fri, 18-Jul-2003
by A.G. Robins, P. Hayden, I. Teasdale
International Journal of Environment and Pollution (IJEP), Vol. 14, No. 1/2/3/4/5/6, 2000
Abstract: A series of wind-tunnel experiments is used to investigate the requirements of ''practical'' models for the prediction of the behaviour of stack emissions from an industrial site (i.e. a group of buildings), in particular for the determination of ground-level concentration or exposure downwind from the site. The study addresses Gaussian plume modelling and, assuming that an adequate model exists for treating the emission in the absence of complicating site features, considers the questions: a) How should the model be modified to account for the influence of the site? b) Which of these modifications is most important? c) How can a group of site buildings be replaced by an ''effective'' building? Realistic modelling of plume height reduction (building induced downwash) is shown to be the key to the successful prediction of the dispersion of elevated emissions above obstacle arrays (in this case, for h/H 3 ≥ 1.2, where h is the source height and H the building height). Some simple rules are defined for representing an array by an effective obstacle.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environment and Pollution (IJEP):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com
Our Blog 
Follow us on Twitter 
Visit us on Facebook