Spacing of langmuir circulations in ocean

Ming Zhao; Mohamed S. Ghidaoui; Zhenhua Huang

doi:10.1142/9789814366489_0110

Spacing of langmuir circulations in ocean

Ming Zhao
, Mohamed S. Ghidaoui
, Zhenhua Huang

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

Abstract

An important primary mechanism for Langmuir circulations (LCs) is the Craik and Leibovich (CL-II) hydrodynamic instability mechanism. The widely accepted CL-II mechanism explains LCs as a consequence of current and wave interaction. However, the original stability analysis of CL-II mechanism quantitatively fails to predict the spacing (streaks occur where down-welling occurs and thus represent the spacing of two rolls) of LCs in ocean. The predicted preferred spanwise wave number corresponding to maximum growth rate of unstable mode is much larger than that observed in ocean. Anisotropic turbulence eddy viscosity is proposed to modify the CL-II formulation. The large horizontal eddy viscosity effectively dissipates LCs with large spanwise wave number and be able to predict preferred spanwise wave number well consistent with ocean.

Original language	English
Title of host publication	Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference
Editors	Joseph Hun-Wei Lee, Chiu-On Ng
Publisher	World Scientific
Pages	927-934
Number of pages	8
ISBN (Print)	9789814366489
DOIs	https://doi.org/10.1142/9789814366489_0110
Publication status	Published - 2011
Externally published	Yes
Event	6th International Conference on Asian and Pacific Coasts, APAC 2011 - Kowloon, Hong Kong Duration: 14 Dec 2011 → 16 Dec 2011

Publication series

Name	Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference

Conference

Conference	6th International Conference on Asian and Pacific Coasts, APAC 2011
Country/Territory	Hong Kong
City	Kowloon
Period	14/12/11 → 16/12/11

Bibliographical note

Publisher Copyright:
© 2019, World Scientific. All rights reserved.

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10.1142/9789814366489_0110

Cite this

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title = "Spacing of langmuir circulations in ocean",

abstract = "An important primary mechanism for Langmuir circulations (LCs) is the Craik and Leibovich (CL-II) hydrodynamic instability mechanism. The widely accepted CL-II mechanism explains LCs as a consequence of current and wave interaction. However, the original stability analysis of CL-II mechanism quantitatively fails to predict the spacing (streaks occur where down-welling occurs and thus represent the spacing of two rolls) of LCs in ocean. The predicted preferred spanwise wave number corresponding to maximum growth rate of unstable mode is much larger than that observed in ocean. Anisotropic turbulence eddy viscosity is proposed to modify the CL-II formulation. The large horizontal eddy viscosity effectively dissipates LCs with large spanwise wave number and be able to predict preferred spanwise wave number well consistent with ocean.",

author = "Ming Zhao and Ghidaoui, \{Mohamed S.\} and Zhenhua Huang",

note = "Publisher Copyright: {\textcopyright} 2019, World Scientific. All rights reserved.; 6th International Conference on Asian and Pacific Coasts, APAC 2011 ; Conference date: 14-12-2011 Through 16-12-2011",

year = "2011",

doi = "10.1142/9789814366489\_0110",

language = "English",

isbn = "9789814366489",

series = "Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference",

publisher = "World Scientific",

pages = "927--934",

editor = "Lee, \{Joseph Hun-Wei\} and Chiu-On Ng",

booktitle = "Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference",

address = "Singapore",

}

Zhao, M, Ghidaoui, MS & Huang, Z 2011, Spacing of langmuir circulations in ocean. in JH-W Lee & C-O Ng (eds), Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference. Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference, World Scientific, pp. 927-934, 6th International Conference on Asian and Pacific Coasts, APAC 2011, Kowloon, Hong Kong, 14/12/11. https://doi.org/10.1142/9789814366489_0110

Spacing of langmuir circulations in ocean. / Zhao, Ming; Ghidaoui, Mohamed S.; Huang, Zhenhua.
Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference. ed. / Joseph Hun-Wei Lee; Chiu-On Ng. World Scientific, 2011. p. 927-934 (Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference).

Research output: Chapter in Book / Conference Paper › Conference Paper › peer-review

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T1 - Spacing of langmuir circulations in ocean

AU - Zhao, Ming

AU - Ghidaoui, Mohamed S.

AU - Huang, Zhenhua

PY - 2011

Y1 - 2011

N2 - An important primary mechanism for Langmuir circulations (LCs) is the Craik and Leibovich (CL-II) hydrodynamic instability mechanism. The widely accepted CL-II mechanism explains LCs as a consequence of current and wave interaction. However, the original stability analysis of CL-II mechanism quantitatively fails to predict the spacing (streaks occur where down-welling occurs and thus represent the spacing of two rolls) of LCs in ocean. The predicted preferred spanwise wave number corresponding to maximum growth rate of unstable mode is much larger than that observed in ocean. Anisotropic turbulence eddy viscosity is proposed to modify the CL-II formulation. The large horizontal eddy viscosity effectively dissipates LCs with large spanwise wave number and be able to predict preferred spanwise wave number well consistent with ocean.

AB - An important primary mechanism for Langmuir circulations (LCs) is the Craik and Leibovich (CL-II) hydrodynamic instability mechanism. The widely accepted CL-II mechanism explains LCs as a consequence of current and wave interaction. However, the original stability analysis of CL-II mechanism quantitatively fails to predict the spacing (streaks occur where down-welling occurs and thus represent the spacing of two rolls) of LCs in ocean. The predicted preferred spanwise wave number corresponding to maximum growth rate of unstable mode is much larger than that observed in ocean. Anisotropic turbulence eddy viscosity is proposed to modify the CL-II formulation. The large horizontal eddy viscosity effectively dissipates LCs with large spanwise wave number and be able to predict preferred spanwise wave number well consistent with ocean.

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U2 - 10.1142/9789814366489_0110

DO - 10.1142/9789814366489_0110

M3 - Conference Paper

AN - SCOPUS:85066736469

SN - 9789814366489

T3 - Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference

SP - 927

EP - 934

BT - Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference

A2 - Lee, Joseph Hun-Wei

A2 - Ng, Chiu-On

PB - World Scientific

T2 - 6th International Conference on Asian and Pacific Coasts, APAC 2011

Y2 - 14 December 2011 through 16 December 2011

ER -

Spacing of langmuir circulations in ocean

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