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

doi:10.1017/jfm.2022.212

CORC > 海洋研究所 > 中国科学院海洋研究所 > 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.1,2,4,5; Pratt, L. J.4; Voet, G.3; Cusack, J. M.3,6; Helfrich, K. R.4; Alford, M. H.3; Girton, J. B.7; Carter, G. S.8
刊名	JOURNAL OF FLUID MECHANICS
	2022-04-05
卷号	940 页码:32
关键词	hydraulic control ocean circulation shallow water flows
ISSN号	0022-1120
DOI	10.1017/jfm.2022.212
通讯作者	Tan, S.(shuwent@ldeo.columbia.edu)
英文摘要	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.
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
语种	英语
出版者	CAMBRIDGE UNIV PRESS
WOS记录号	WOS:000778235900001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/178621]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Tan, S.
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Shandong, Peoples R China 3.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA 4.Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA 02543 USA 5.Columbia Univ, Lamont Doherty Earth Observ, New York, NY 10027 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
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.