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Experimental studies on initiation of current-induced movement of mud

文献类型：期刊论文

作者Yang B; Luo Y; Jeng DS; Feng J; 呼和敖德
刊名APPLIED OCEAN RESEARCH
出版日期2018-11-01
卷号80页码:220-227
关键词Mud Critical flow velocity of erosion Shear stress of initiation movement of sediment Grey value PIV
ISSN号0141-1187
DOI10.1016/j.apor.2018.09.006
英文摘要The initiation movement of mud exposed to currents was investigated experimentally. The initial movement of mud with different sedimentary densities was determined by measuring the flow velocity and grey level of water's image synchronously. A new method to determine the initiation movement of mud is provided (i.e., the method of relative grey value of water's image in the flume). The experimental results show that the initiation movement of mud can be classified as slight erosion and chunk erosion. The sediment concentration on a muddy bed is low for the slight erosion, and the variation in water's relative grey level is of the order of similar to 10. The sediment concentration for the chunk erosion corresponding to a jump in the curve of relative grey value clearly increases, and the variation in relative grey value at that instant is larger than 20. The critical flow velocity, critical friction velocity, and critical shear stress of initiation of movement of mud increase with the increase in deposit density.
分类号二类
URL标识查看原文
WOS关键词COHESIVE SEDIMENTS ; QUARTZ PARTICLES ; EROSION ; THRESHOLD ; ERODIBILITY ; TRANSPORT ; STABILITY ; BEHAVIOR ; SCOUR
WOS研究方向Engineering, Ocean ; Oceanography
语种英语
WOS记录号WOS:000448093800018
资助机构National Natural Science Foundation of China [10902112, 51708456] ; Fundamental Research Funds for the Central Universities [2682017QY02]
源URL[http://dspace.imech.ac.cn/handle/311007/78136]  
专题力学研究所_职能与支撑部门
作者单位1.Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mech, Key Lab Hydraul & Ocean, Beijing 100190, Peoples R China
3.Griffith Univ, Sch Engn & Built Environm, Gold Coast Campus, Southport, Qld 4222, Australia
推荐引用方式
GB/T 7714		 Yang B,Luo Y,Jeng DS,et al. Experimental studies on initiation of current-induced movement of mud[J]. APPLIED OCEAN RESEARCH,2018,80:220-227.
APA Yang B,Luo Y,Jeng DS,Feng J,&呼和敖德.(2018).Experimental studies on initiation of current-induced movement of mud.APPLIED OCEAN RESEARCH,80,220-227.
MLA Yang B,et al."Experimental studies on initiation of current-induced movement of mud".APPLIED OCEAN RESEARCH 80(2018):220-227.

入库方式： OAI收割

来源：力学研究所

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