Numerical simulation on flow characteristics of large-scale submarine mudflow

doi:10.1016/j.apor.2021.102524

IMECH-IR > 流固耦合系统力学重点实验室

	Numerical simulation on flow characteristics of large-scale submarine mudflow
	Zhang Y(张岩)1,2; Lu XB(鲁晓兵)1,2 ; Zhang XH(张旭辉)1,2 ; Li P(李鹏)1,2
通讯作者	Zhang, Xuhui([email protected])
发表期刊	APPLIED OCEAN RESEARCH
	2021-03-01
卷号	108 页码:10
ISSN	0141-1187
摘要	Gas hydrate (GH) is widely distributed in the world according to the geological survey. Most of GH is located in the ocean. After GH dissociation, the strength of gas hydrate bearing sediments (GHBS) decreases accompanying the rise of pore pressure, which can cause marine landslide. Landslide may transform into mudflows during movement on the seabed. The massive movement of submarine mudflow can result in the serious deformation of (or even damage of) submarine pipelines, the dumping of offshore platforms, and tsunamis. In this paper, the flow characteristics of the large-scale submarine mudflow are investigated based on the Euler-Euler multiphase flow model combining with kinetic theory of granular flow (KTGF). The controlling dimensionless parameters, such as the initial depositional form and the relative depth, are given. The hydroplaning and frontal detachment during the mass movement are captured. The front velocity of the mudflow, and the free surface elevations at the sea level are analyzed. The numerical results show that the large-scale submarine mudflow has a significant impact on the sea level. The submarine mudflow should be taken into consideration during design of submarine pipelines and offshore platforms in GH-distributed sea area duo to its great destructive power.
关键词	Submarine mudflow Mass movement Multiphase flow Numerical simulation
DOI	10.1016/j.apor.2021.102524
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000623851100005
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Ocean ; Oceanography
资助项目	National Natural Science Foundation of China[11872365] ; National Natural Science Foundation of China[51639008] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2017027]
项目资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
论文分区	二类
力学所作者排名	1
RpAuthor	Zhang, Xuhui
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/86205
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang Y,Lu XB,Zhang XH,et al. Numerical simulation on flow characteristics of large-scale submarine mudflow[J]. APPLIED OCEAN RESEARCH,2021,108:10.Rp_Au:Zhang, Xuhui
APA	张岩,鲁晓兵,张旭辉,&李鹏.(2021).Numerical simulation on flow characteristics of large-scale submarine mudflow.APPLIED OCEAN RESEARCH,108,10.
MLA	张岩,et al."Numerical simulation on flow characteristics of large-scale submarine mudflow".APPLIED OCEAN RESEARCH 108(2021):10.

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