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Internal waves and velocity scales of double-diffusive intrusions

Malki-Epshtein, L; Huppert, HE; (2004) Internal waves and velocity scales of double-diffusive intrusions. Presented at: American Physical Society, 57th Annual Meeting of the Division of Fluid Dynamics, Seattle, Washington, USA.

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Abstract

A two-dimensional double-diffusive convection pattern of horizontally extending cells arises when a salt-stratified fluid is cooled from the side. In a previous study, the rate of growth of these intrusions was found to depend on the length of the finite tank, with the end-wall playing a role in their evolution right from the onset of the experiment. We now present a particle image velocimetry experimental study of these intrusions, confirming their internal structure and formation process. Velocity scales within the intrusions and in the environment are evaluated. Internal waves are seen to propagate away from the cooled side wall, and are seen to be a mechanism for adjustment of the far field conditions ahead of the convecting cells.

Type: Conference item (Presentation)
Title: Internal waves and velocity scales of double-diffusive intrusions
Event: American Physical Society, 57th Annual Meeting of the Division of Fluid Dynamics
Location: Seattle, Washington, USA
Dates: 21 November 2004 - 23 November 2004
Publisher version: http://flux.aps.org/meetings/YR04/DFD04/baps/abs/S...
Additional information: MEETING ID: DFD04., abstract #EB.004
Keywords: double diffusion, buoyancy, convection, geophysical fluid dynamics, fluid flow, experimental, PIV, internal waves
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng
URI: http://discovery.ucl.ac.uk/id/eprint/11061
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