Hydraulic control of flow in a multi-passage system connecting two basins

doi:10.1017/jfm.2022.212

IOCAS-IR > 海洋环流与波动重点实验室

	Hydraulic control of flow in a multi-passage system connecting two basins
	Tan, S.1,2,3,4; Pratt, L. J.1; Voet, G.5; Cusack, J. M.5,6; Helfrich, K. R.1; Alford, M. H.5; Girton, J. B.7; Carter, G. S.8
	2022-04-05
发表期刊	JOURNAL OF FLUID MECHANICS
ISSN	0022-1120
卷号	940 页码:32
通讯作者	Tan, S.(shuwent@ldeo.columbia.edu)
摘要	When a fluid stream in a conduit splits in order to pass around an obstruction, it is possible that one branch will be critically controlled while the other remains not so. This is apparently the situation in Pacific Ocean abyssal circulation, where most of the northward flow of Antarctic bottom water passes through the Samoan Passage, where it is hydraulically controlled, while the remainder is diverted around the Manihiki Plateau and is not controlled. These observations raise a number of questions concerning the dynamics necessary to support such a regime in the steady state, the nature of upstream influence and the usefulness of rotating hydraulic theory to predict the partitioning of volume transport between the two paths, which assumes the controlled branch is inviscid. Through the use of a theory for constant potential vorticity flow and accompanying numerical model, we show that a steady-state regime similar to what is observed is dynamically possible provided that sufficient bottom friction is present in the uncontrolled branch. In this case, the upstream influence that typically exists for rotating channel flow is transformed into influence into how the flow is partitioned. As a result, the partitioning of volume flux can still be reasonably well predicted with an inviscid theory that exploits the lack of upstream influence.
关键词	hydraulic control ocean circulation shallow water flows
DOI	10.1017/jfm.2022.212
收录类别	SCI
语种	英语
资助项目	National Science Foundation[OCE-1029268] ; National Science Foundation[OCE-1029483] ; National Science Foundation[OCE-1657264] ; National Science Foundation[OCE-1657795] ; National Science Foundation[OCE-1657870] ; National Science Foundation[OCE-1658027]
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
WOS记录号	WOS:000778235900001
出版者	CAMBRIDGE UNIV PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/178622
专题	海洋环流与波动重点实验室
通讯作者	Tan, S.
作者单位	1.Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA 02543 USA 2.Columbia Univ, Lamont Doherty Earth Observ, New York, NY 10027 USA 3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Shandong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA 6.Rutgers State Univ, New Brunswick, NJ 08901 USA 7.Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA 8.Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI 96822 USA
第一作者单位	海洋环流与波动重点实验室
通讯作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Tan, S.,Pratt, L. J.,Voet, G.,et al. Hydraulic control of flow in a multi-passage system connecting two basins[J]. JOURNAL OF FLUID MECHANICS,2022,940:32.
APA	Tan, S..,Pratt, L. J..,Voet, G..,Cusack, J. M..,Helfrich, K. R..,...&Carter, G. S..(2022).Hydraulic control of flow in a multi-passage system connecting two basins.JOURNAL OF FLUID MECHANICS,940,32.
MLA	Tan, S.,et al."Hydraulic control of flow in a multi-passage system connecting two basins".JOURNAL OF FLUID MECHANICS 940(2022):32.

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