Strunin, D.Roberts, A.Ao, S.I.Gelman, L.Hukins, D.W.L.Hunter, A.Korsunsky, A.M.2011-12-092011-12-092009World Congress on Engineering: WCE 2009 : Vol II, 2009, pp.1-597898818210102078-09582078-0966http://hdl.handle.net/2440/68688We 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.en© Copyright International Association of Engineers. Provided through DOAJ whose site and its metadata are licensed under CC BY-SADispersion; channel; turbulent boundary layerConference paper002011274500027161570022827735Roberts, A. [0000-0001-8930-1552]