Please use this identifier to cite or link to this item: http://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)
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
RMID: 0020112745
Published version: https://doaj.org/article/1585602ac5fc4d0b9749fd51aa7b0f20
Appears in Collections:Mathematical Sciences publications

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