A NEW MEASURE FOR DIRECT MEASUREMENT OF THE BED SHEAR STRESS OF WAVE BOUNDARY LAYER IN WAVE FLUME

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	A NEW MEASURE FOR DIRECT MEASUREMENT OF THE BED SHEAR STRESS OF WAVE BOUNDARY LAYER IN WAVE FLUME
	Huo Guang 1; Wang Yi-gang 1; Yin Bao-shu 2; You Zai-jin 3,4
刊名	JOURNAL OF HYDRODYNAMICS
	2007-08-01
卷号	19 期号:4 页码:517-524
关键词	Wave Boundary Layer Friction Coefficient Shear Plate Shear Stress Acoustic Doppler Velocimeter (Adv)
文献子类	Article
英文摘要	In this article, a shear plate was mounted on the bottom in a wave flume and direct measurements of the smooth and rough bed shear stress under regular and irregular waves were conducted with the horizontal force exerted on the shear plates by the bottom shear stress in the wave boundary layer. Under immobile bed condition, grains of sand were glued uniformly and tightly onto the shear plate, being prevented from motion with the fluid flow and generation of sand ripples. The distribution of the bottom mean shear stress varying with time was measured by examining the interaction between the shear plate and shear transducers. The relation between the force measured by the shear transducers and its voltage is a linear one. Simultaneous measurements of the bottom velocity were carried out by an Acoustic Doppler Velocimeter (ADV), while the whole process was completely controlled by computers, bottom shear stress and velocity were synchronously measured. Based on the experimental results, it can be concluded that (1) the friction coefficient groews considerably with the increase of the Reynolds number, (2) the shear stress is a function varying with time and linearly proportional to the velocity. Compared with theoretical results and previous experimental data, it is shown that the experimental method is feasible and effective, A further study on the bed shear stress under regular or irregular waves can be carried out. And applicability to the laboratory studies on the initiation of sediments and the measurement of the shear stress after sediment imigration.
语种	英语
WOS记录号	WOS:000208248000017
公开日期	2011-07-25
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/9813]
专题	海洋研究所_海洋环流与波动重点实验室
作者单位	1.Hohai Univ, Minist Educ, Key Lab Coastal Disaster & Def, Nanjing 210098, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Hohai Univ, State Key Lab Hydrol Water Resources & Hydraul En, Nanjing 210098, Jiangsu, Peoples R China 4.Dept Nat Resources, Coastal Unit, Dangar, NSW, Australia
推荐引用方式 GB/T 7714	Huo Guang,Wang Yi-gang,Yin Bao-shu,et al. A NEW MEASURE FOR DIRECT MEASUREMENT OF THE BED SHEAR STRESS OF WAVE BOUNDARY LAYER IN WAVE FLUME[J]. JOURNAL OF HYDRODYNAMICS,2007,19(4):517-524.
APA	Huo Guang,Wang Yi-gang,Yin Bao-shu,&You Zai-jin.(2007).A NEW MEASURE FOR DIRECT MEASUREMENT OF THE BED SHEAR STRESS OF WAVE BOUNDARY LAYER IN WAVE FLUME.JOURNAL OF HYDRODYNAMICS,19(4),517-524.
MLA	Huo Guang,et al."A NEW MEASURE FOR DIRECT MEASUREMENT OF THE BED SHEAR STRESS OF WAVE BOUNDARY LAYER IN WAVE FLUME".JOURNAL OF HYDRODYNAMICS 19.4(2007):517-524.