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A unified criterion for initiation of sediment motion and inception of sheet flow under water waves

文献类型：期刊论文

作者You, Zai-Jin; Yin, Baoshu; You, ZJ, NSW Dept Nat Resources, Coastal Unit, POB 2185, Dangar, NSW 2309, Australia
刊名SEDIMENTOLOGY
出版日期2006-10-01
卷号53期号:5页码:1181-1190
关键词Initial Motion Irregular Wave Onset Velocity Sheet Flow Threshold Criterion
ISSN号0037-0746
DOI10.1111/j.1365-3091.2006.00810.x
文献子类Article
英文摘要A unified criterion is developed for initiation of non-cohesive sediment motion and inception of sheet flow under water waves over a horizontal bed of sediment based on presently available experimental data. The unified threshold criterion is of the single form, U-o = 2 pi C[1 + 5(T-R/T)(2)](-1/4), where U-o is the onset velocity of sediment motion or sheet flow, T is wave period, and C and T-R are the coefficients. It is found that for a given sediment, U-o initially increases sharply with wave period, then gradually approaches the maximum onset velocity U-o = 2 pi C and becomes independent of T when T is larger. The unified criterion can also be extended to define sediment initial motion and sheet flow under irregular waves provided the significant wave orbital velocity and period of irregular waves are introduced in this unified criterion.; A unified criterion is developed for initiation of non-cohesive sediment motion and inception of sheet flow under water waves over a horizontal bed of sediment based on presently available experimental data. The unified threshold criterion is of the single form, U-o = 2 pi C[1 + 5(T-R/T)(2)](-1/4), where U-o is the onset velocity of sediment motion or sheet flow, T is wave period, and C and T-R are the coefficients. It is found that for a given sediment, U-o initially increases sharply with wave period, then gradually approaches the maximum onset velocity U-o = 2 pi C and becomes independent of T when T is larger. The unified criterion can also be extended to define sediment initial motion and sheet flow under irregular waves provided the significant wave orbital velocity and period of irregular waves are introduced in this unified criterion.
学科主题Geology
URL标识查看原文
语种英语
WOS记录号WOS:000240633400011
公开日期2010-11-18
源URL[http://ir.qdio.ac.cn/handle/337002/1776]  
专题海洋研究所_海洋环流与波动重点实验室
通讯作者You, ZJ, NSW Dept Nat Resources, Coastal Unit, POB 2185, Dangar, NSW 2309, Australia
作者单位1.NSW Dept Nat Resources, Coastal Unit, Dangar, NSW 2309, Australia
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式
GB/T 7714		 You, Zai-Jin,Yin, Baoshu,You, ZJ, NSW Dept Nat Resources, Coastal Unit, POB 2185, Dangar, NSW 2309, Australia. A unified criterion for initiation of sediment motion and inception of sheet flow under water waves[J]. SEDIMENTOLOGY,2006,53(5):1181-1190.
APA You, Zai-Jin,Yin, Baoshu,&You, ZJ, NSW Dept Nat Resources, Coastal Unit, POB 2185, Dangar, NSW 2309, Australia.(2006).A unified criterion for initiation of sediment motion and inception of sheet flow under water waves.SEDIMENTOLOGY,53(5),1181-1190.
MLA You, Zai-Jin,et al."A unified criterion for initiation of sediment motion and inception of sheet flow under water waves".SEDIMENTOLOGY 53.5(2006):1181-1190.

入库方式： OAI收割

来源：海洋研究所

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