Environmental dispersion in a tidal flow through a depth-dominated   wetland

doi:10.1016/j.cnsns.2012.04.006

CORC > 北京大学 > 工学院

	Environmental dispersion in a tidal flow through a depth-dominated wetland
	Wu, Zi ; Zeng, L. ; Chen, G. Q. ; Li, Z. ; Shao, Ling ; Wang, P. ; Jiang, Z.
刊名	communications in nonlinear science and numerical simulation
	2012
关键词	Wetland Tidal flow Environmental dispersion Concentration moment method MAINSTREAM YELLOW-RIVER CONSTRUCTED WETLAND WATER-QUALITY SALT-MARSH LONGITUDINAL DISPERSION CONTAMINANT DISPERSION ECOSYSTEM SERVICES TAYLOR DISPERSION SOLUTE-DISPERSION SHEAR DISPERSION
DOI	10.1016/j.cnsns.2012.04.006
英文摘要	Presented in this paper is a theoretical analysis for longitudinal evolution of mean concentration of an environmental emission into a tidal wetland flow. The velocity distribution of the periodic flow through the wetland is derived, with that for a fully developed steady wetland flow included as a special case. The zero-th, first and the growth of the second order moments of the concentration are rigorously obtained by applying Aris's method of concentration moments to derive the environmental dispersivity. The necessary time needed for the environmental dispersivity to attain a steady oscillating status is analyzed. The effects of some characteristic parameters, especially one representing the impact of vegetation in the wetland on both velocity profile and environmental dispersivity, and another identifying the effect of flow oscillation on the environmental dispersivity, are illustrated in detail. To reflect the dispersion enhancement by the flow oscillation, a typical example is given to characterize the critical length and duration of the contaminant cloud. (C) 2012 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000307104000051&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Mathematics, Applied; Mathematics, Interdisciplinary Applications; Mechanics; Physics, Fluids & Plasmas; Physics, Mathematical; SCI(E); EI; 30; ARTICLE; 12; 5007-5025; 17
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154556]
专题	工学院
推荐引用方式 GB/T 7714	Wu, Zi,Zeng, L.,Chen, G. Q.,et al. Environmental dispersion in a tidal flow through a depth-dominated wetland[J]. communications in nonlinear science and numerical simulation,2012.
APA	Wu, Zi.,Zeng, L..,Chen, G. Q..,Li, Z..,Shao, Ling.,...&Jiang, Z..(2012).Environmental dispersion in a tidal flow through a depth-dominated wetland.communications in nonlinear science and numerical simulation.
MLA	Wu, Zi,et al."Environmental dispersion in a tidal flow through a depth-dominated wetland".communications in nonlinear science and numerical simulation (2012).