Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/68688
Type: | Conference paper |
Title: | Low-dimensional boundary-layer model of turbulent dispersion in a channel |
Author: | Strunin, D. Roberts, A. |
Citation: | World Congress on Engineering: WCE 2009 : Vol II, 2009, pp.1-5 |
Publisher: | Newswood and International Association of Engineers |
Publisher Place: | Hong Kong |
Issue Date: | 2009 |
Series/Report no.: | Lecture Notes in Engineering and Computer Science; 2177(1) |
ISBN: | 9789881821010 |
ISSN: | 2078-0958 2078-0966 |
Conference Name: | World Congress on Engineering (2009 : London, UK) |
Editor: | Ao, S.I. Gelman, L. Hukins, D.W.L. Hunter, A. Korsunsky, A.M. |
Statement of Responsibility: | D.V. Struin, A. J. Roberts |
Abstract: | We analyse dispersion of contaminants in turbulent boundary layer using centre manifold technique. The method describes long-term asymp- totics of the contaminant concentration as it becomes spread across the entire layer and is weakly distorted by the velocity shear. The dispersion is investigated in two cases: (a) logarithmic and (b) power veloc- ity profile across the layer according to a traditional and a more recent theory respectively. We deduce an advection-diffusion equation for the depth-average concentration in each case. The equation represents a leading approximation of the dynamics and can be ex- tended to include higher-order derivatives for better precision. |
Keywords: | Dispersion; channel; turbulent boundary layer |
Rights: | © Copyright International Association of Engineers. Provided through DOAJ whose site and its metadata are licensed under CC BY-SA |
Published version: | https://doaj.org/article/1585602ac5fc4d0b9749fd51aa7b0f20 |
Appears in Collections: | Aurora harvest 5 Mathematical Sciences publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_68688.pdf | Published version | 345.07 kB | Adobe PDF | View/Open |
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