南方科技大学知识苑(SUSTech KC): Influence of Suspension Height on Pipeline Movement due to Submarine Debris Flow

题名	Influence of Suspension Height on Pipeline Movement due to Submarine Debris Flow
作者	Qian, Xuesheng1,2 ; Das, Himangshu S.3
通讯作者	Das, Himangshu S.
发表日期	2019-11
DOI	10.1061/(ASCE)PS.1949-1204.0000417
发表期刊	Journal of Pipeline Systems Engineering and Practice 影响因子和分区
ISSN	1949-1190
EISSN	1949-1204
卷号	10 期号:4
摘要	Deepwater pipelines are commonly found to be suspended above, freely laid on, and buried underneath the seafloor due to complex seabed geomorphology and surrounding hydrodynamic conditions. Under different suspension height, the pipeline may undergo distinct impact forces arising from the vertical velocity profile of submarine debris flow. As such, suspension height becomes one of the most critical parameters when estimating pipeline movement subject to debris flow impact. In this paper, the coupling model of submarine debris flow with pipeline interaction was further improved. The formula incorporating the effect of suspension height was used to estimate debris flow impact force on pipeline. The improved model was then applied to two schematized cases representing continental shelves with a uniform slope and a sinuous canyon. In each case, the flow structures of submarine debris flow were investigated, including total thickness, thickness of shear layer, depth-averaged velocity, and vertical velocity profile of debris flow. The influence of suspension height on pipeline movement due to debris flow impact was also analyzed. Moreover, sensitivity analyses were performed to study the effects of yield stress and initial failure height of debris flow on pipeline movement under different suspension heights. (C) 2019 American Society of Civil Engineers.
关键词	Subsea pipeline Submarine debris flow Flow structure Suspension height Pipeline movement Semiempirical method
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	第一
资助项目	Fugro Inc.[636567]
WOS研究方向	Engineering ; Water Resources
WOS类目	Engineering, Civil ; Water Resources
WOS记录号	WOS:000489611300017
出版者	ASCE-AMER SOC CIVIL ENGINEERS
EI入藏号	20193807446336
EI主题词	Debris ; Flow structure ; Sensitivity analysis ; Shear flow ; Submarines ; Suspensions (fluids) ; Velocity ; Water pipelines ; Yield stress
EI分类号	Pipe, Piping and Pipelines:619.1 ; Fluid Flow, General:631.1 ; Combat Naval Vessels:672.1 ; Chemical Products Generally:804 ; Mathematics:921 ; Materials Science:951
来源库	Web of Science
引用统计	被引频次[WOS]：2
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/42085
专题	工学院_海洋科学与工程系
作者单位	1.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China 2.Jackson State Univ, Dept Civil & Environm Engn, Jackson, MS 39217 USA 3.US Army Corps Engineers, Engn & Construct Div, Galveston, TX 77550 USA
第一作者单位	海洋科学与工程系
第一作者的第一单位	海洋科学与工程系
推荐引用方式 GB/T 7714	Qian, Xuesheng,Das, Himangshu S.. Influence of Suspension Height on Pipeline Movement due to Submarine Debris Flow[J]. Journal of Pipeline Systems Engineering and Practice,2019,10(4).
APA	Qian, Xuesheng,&Das, Himangshu S..(2019).Influence of Suspension Height on Pipeline Movement due to Submarine Debris Flow.Journal of Pipeline Systems Engineering and Practice,10(4).
MLA	Qian, Xuesheng,et al."Influence of Suspension Height on Pipeline Movement due to Submarine Debris Flow".Journal of Pipeline Systems Engineering and Practice 10.4(2019).