Zeng , Yu-hong, Huai , Wen-xin and Guymer, I. (Ian). (2008) Transverse mixing in a trapezoidal compound open channel. Journal of Hydrodynamics, Volume 20 (Number 5). pp. 645-649. ISSN 1001-6058

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Abstract

Transverse mixing characteristics of solute in the open channel flow can provide useful information for river environmental management. The lateral mixing coefficient is a crucial parameter for reproducing the transverse mixing either by numerical simulation or by analytical prediction. Since the solute mixing can be greatly affected by the lateral variations in water depth. mixing coefficient should be determined in each sub-section (i.e., the main channel, side slope and flood plain) separately. In this article. the transverse mixing in a symmetric trapezoidal compound channel was studied based on laboratory measurement of longitudinal and transverse velocity components and lateral distribution of solute concentration. The lateral mixing coefficient was estimated by adopting different Schmidt numbers in different sub-sections divided according to the developing trend of the eddy viscosity, and finally a piecewise linear profile of mixing coefficient was adopted to analytically predict the transverse solute concentration. The comparison between the analytically predicted data and the measuring solute concentration proved that this is an effective way to estimate the lateral mixing in the open channel flow with lateral variations in water depth.

Item Type:	Journal Article
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering
Divisions:	Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH):	Fluid dynamics, Mixing, Hydrodynamics, Open-channel flow, Environmental management, River engineering
Journal or Publication Title:	Journal of Hydrodynamics
Publisher:	Elsevier Science Inc.
ISSN:	1001-6058
Date:	October 2008
Volume:	Volume 20
Number:	Number 5
Number of Pages:	5
Page Range:	pp. 645-649
Identification Number:	10.1016/S1001-6058(08)60107-9
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Guo jia zi ran ke xue ji jin wei yuan hui (China) [National Natural Science Foundation of China] (NSFC), Dalian li gong da xue [Dalian University of Technology]
Grant number:	50679061 (NSFC), 50709025 (NSFC), Lp0601 (Dalian)
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URI:	http://wrap.warwick.ac.uk/id/eprint/28682

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