IMHE OpenIR  > 山地灾害与地表过程重点实验室
Influence of Flow Width on Mean Velocity of Debris Flows in Wide Open Channel
Hu, Kaiheng1,2; Tian, Mi1,2,3; Li, Yong1,2
Corresponding AuthorHu, KH
AbstractDebris flow in a wide open downstream channel has a significant transverse velocity component that strongly influences its mean longitudinal velocity. Investigation of observation data of debris-flow surges at Jiangjia Ravine in China shows the dependency of Manning resistance of debris flows on the ratio of flow width to depth. Regression fit reveals a power function relationship between the Manning resistance coefficient and the width-to-depth ratio. This derives a new formula of mean velocity incorporating the influence of flow width. The result indicates that the width-to-depth ratio can be viewed as a kind of shape roughness analogous to grain roughness in the Darcy-Weisbach resistance coefficient expression. DOI: 10.1061/(ASCE)HY.1943-7900.0000648. (C) 2013 American Society of Civil Engineers.
KeywordDebris Flows Manning Resistance Coefficient Mean Flow Velocity Flow Width
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS Subject ExtendedEngineering ; Water Resources
Indexed BySCI
WOS SubjectEngineering, Civil ; Engineering, Mechanical ; Water Resources
WOS IDWOS:000313361400009
Funding OrganizationNational Basic Research Program of China (973 Program)(2011CB409902) ; Hundred Young Talents Program of the Institute of Mountain Hazards and Environment ; Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-JS305)
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China
3.Chinese Acad Sci, Grad Univ, Chengdu, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Hu, Kaiheng,Tian, Mi,Li, Yong. Influence of Flow Width on Mean Velocity of Debris Flows in Wide Open Channel[J]. JOURNAL OF HYDRAULIC ENGINEERING-ASCE,2013,139(1):65-69.
APA Hu, Kaiheng,Tian, Mi,&Li, Yong.(2013).Influence of Flow Width on Mean Velocity of Debris Flows in Wide Open Channel.JOURNAL OF HYDRAULIC ENGINEERING-ASCE,139(1),65-69.
MLA Hu, Kaiheng,et al."Influence of Flow Width on Mean Velocity of Debris Flows in Wide Open Channel".JOURNAL OF HYDRAULIC ENGINEERING-ASCE 139.1(2013):65-69.
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