Theoretical analysis of the laminar boundary layer beneath forward-leaning waves

doi:10.1016/j.coastaleng.2021.103852

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Theoretical analysis of the laminar boundary layer beneath forward-leaning waves
	Xie YQ(谢益芹)1,2; Zhou JF(周济福)1,2; Wang X(王旭)2; Duan J(段军); Duan JL(段金龙)2
刊名	COASTAL ENGINEERING
	2021-04-01
卷号	165 页码:11
关键词	Forward-leaning waves Near bed orbital velocity Theoretical solution Laminar boundary layer Bottom shear stress
ISSN号	0378-3839
DOI	10.1016/j.coastaleng.2021.103852
通讯作者	Zhou, Jifu(zhoujf@imech.ac.cn)
英文摘要	Wave-induced sediment transport is an important issue in coastal engineering. It is of fundamental significance to manifest the boundary layer behavior of nonlinear waves to accurately describe sediment transport in coastal areas, where wave forms are typically cnoidal or forward leaning rather than sinusoidal or symmetrical. In the present work, a novel expression of the near bed orbital velocity beneath forward-leaning waves is worked out. It is a series in which the coefficients are invariable for arbitrarily forward-leaning waves and just depend on the order of expansion. Based on this new expression, a theoretical solution of the laminar boundary layer beneath forward-leaning waves is derived by solving the governing equation via the method of variable separation. With this theoretical solution, it is convenient to acquire the velocity and shear stress (especially at the bottom) of the boundary layer beneath forward-leaning waves, which are different from those beneath sinusoidal waves as the degree of forward leaning increases. The phase lag between the bottom shear stress and the free-stream velocity is also analyzed, as well as the boundary layer thickness. In addition, the applicability of the present theory is discussed by comparing theoretical results with numerical results of different flow regimes.
分类号	一类
资助项目	National Key R&D Program of China[2017YFC1404202] ; National Natural Science Foundation of China[11572332] ; National Natural Science Foundation of China[51520105014] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040203] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22040304]
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000626815000002
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86296]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Xie YQ,Zhou JF,Wang X,et al. Theoretical analysis of the laminar boundary layer beneath forward-leaning waves[J]. COASTAL ENGINEERING,2021,165:11.
APA	谢益芹,周济福,王旭,段军,&段金龙.(2021).Theoretical analysis of the laminar boundary layer beneath forward-leaning waves.COASTAL ENGINEERING,165,11.
MLA	谢益芹,et al."Theoretical analysis of the laminar boundary layer beneath forward-leaning waves".COASTAL ENGINEERING 165(2021):11.