A numerical model of the fluid motion at a density front in the presence of background turbulence

Yign Noh, H. J.S. Fernando

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

It is shown that, at high turbulence intensities, the mutual intrusion of gravity currents is inhibited and the horizontal mass transport is dominated by the turbulent diffusion. The propagation of the front, the horizontal density flux, and the potential energy anomaly are calculated and are compared with available experimental data. The model is extended to include the effects of background rotation. It is found that, in the presence of background turbulence, the geostrophic equilibrium cannot be achieved, and the cross-frontal velocity persists indefinitely. The effects of rotation on the fluid motions were found to be impaired by the background turbulence. -from Authors

Original languageEnglish
Pages (from-to)1142-1153
Number of pages12
JournalJournal of Physical Oceanography
Volume23
Issue number6
DOIs
Publication statusPublished - 1993 Jan 1

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density front
turbulence
fluid
turbulent diffusion
mass transport
potential energy
gravity
anomaly
effect

All Science Journal Classification (ASJC) codes

  • Oceanography

Cite this

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A numerical model of the fluid motion at a density front in the presence of background turbulence. / Noh, Yign; Fernando, H. J.S.

In: Journal of Physical Oceanography, Vol. 23, No. 6, 01.01.1993, p. 1142-1153.

Research output: Contribution to journalArticle

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T1 - A numerical model of the fluid motion at a density front in the presence of background turbulence

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AB - It is shown that, at high turbulence intensities, the mutual intrusion of gravity currents is inhibited and the horizontal mass transport is dominated by the turbulent diffusion. The propagation of the front, the horizontal density flux, and the potential energy anomaly are calculated and are compared with available experimental data. The model is extended to include the effects of background rotation. It is found that, in the presence of background turbulence, the geostrophic equilibrium cannot be achieved, and the cross-frontal velocity persists indefinitely. The effects of rotation on the fluid motions were found to be impaired by the background turbulence. -from Authors

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