Strunin, Dmitry V. and Roberts, Anthony J. (2009) Low-dimensional boundary-layer model of turbulent dispersion in a channel. In: WCE 2009: World Congress of Engineering , 1-3 Jul 2009, London, United Kingdom.
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We analyse dispersion of contaminants in turbulent boundary layer using centre manifold technique. The method describes long-term asymptotics 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 velocity 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 extended to include higher-order derivatives for better precision.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||No evidence of copyright restrictions on web site. 978-988-17012-5-1 (v.1); 978-988-18210-1-0 (v.2).|
|Uncontrolled Keywords:||dispersion; channel; turbulent boundary layer|
|Subjects:||290000 Engineering and Technology > 290500 Mechanical and Industrial Engineering > 290501 Mechanical Engineering
230000 Mathematical Sciences
|Depositing User:||Dr Dmitry Strunin|
|Date Deposited:||16 Nov 2009 05:42|
|Last Modified:||02 Jul 2013 23:16|
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