A two-phase approach to wave-induced sediment transport under sheet flow conditions

doi:10.1016/j.coastaleng.2011.06.003

IMECH-IR > 环境力学重点实验室(2009-2011)

	A two-phase approach to wave-induced sediment transport under sheet flow conditions
	Chen X; Li Y(李勇); Niu XJ; Li M; Chen DY; Yu XP; Yu, XP (reprint author), Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
发表期刊	Coastal Engineering
	2011
卷号	58 期号:11 页码:1072-1088
ISSN	0378-3839
摘要	A numerical model for the general description of the sediment transport under oscillatory sheet flow conditions is developed based on a two-fluid representation of the two-phase turbulent flows. The governing equations of the model are the Reynolds averaged continuity equations and equations of motion for both the fluid and the sediment phases. The two phases are coupled by the interphase forces including the resistance force, the inertia force, and the lift force. Turbulence closure of the fluid phase is based on a slightly modified k-epsilon model while an algebraic particle-turbulence model is applied to the sediment phase. The numerical method is based on the modified SIMPLE scheme and an improved time stepping technique. The model is validated by the published data for the symmetrical oscillatory sheet flows generated in an oscillatory flow tunnel at the University of Tokyo and for both the symmetrical and the asymmetrical oscillatory sheet flows generated in an oscillatory flow tunnel at University of Aberdeen. The numerical results on the temporal and spacial variation of the sediment concentration, the horizontal velocities of the two phases, the horizontal and vertical fluxes of the sediment phase, as well as the thickness of the sheet flow layer all show satisfactory agreement with the laboratory data. The model is also shown to predict the net sediment transport rate with a reasonably good accuracy. (C) 2011 Elsevier B.V. All rights reserved.
关键词	Two-phase Flow Two-fluid Model Oscillatory Sheet Flow Sediment Transport Numerical Computation Oscillatory Boundary-layers Graded Sands Model Beds Suspension Particles Motions Uniform
学科领域	Engineering
DOI	10.1016/j.coastaleng.2011.06.003
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000294525600006
关键词[WOS]	OSCILLATORY BOUNDARY-LAYERS ; GRADED SANDS ; MODEL ; BEDS ; SUSPENSION ; PARTICLES ; MOTIONS ; UNIFORM
WOS研究方向	Engineering
WOS类目	Engineering, Civil ; Engineering, Ocean
项目资助者	This work is partially supported by Natural Science Foundation of China (NSFC) under grant No. 10772099 and by State Key Laboratory of Hydroscience and Engineering under grant No. 2011-KY-1. The first author also thanks China Scholarship Council (CSC) for providing him an opportunity to visit School of Engineering, University of Liverpool, UK for one year, and he would also like to thank Dr. Ming Li at University of Liverpool for his kind help.
课题组名称	LMFS海洋环境与工程(LEM)
论文分区	一类
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/44996
专题	环境力学重点实验室(2009-2011)
通讯作者	Yu, XP (reprint author), Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Chen X,Li Y,Niu XJ,et al. A two-phase approach to wave-induced sediment transport under sheet flow conditions[J]. Coastal Engineering,2011,58,11,:1072-1088.
APA	Chen X.,李勇.,Niu XJ.,Li M.,Chen DY.,...&Yu, XP .(2011).A two-phase approach to wave-induced sediment transport under sheet flow conditions.Coastal Engineering,58(11),1072-1088.
MLA	Chen X,et al."A two-phase approach to wave-induced sediment transport under sheet flow conditions".Coastal Engineering 58.11(2011):1072-1088.

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