Gregorio, S. O. (Sandy O.), Thomas, P. J. (Peter J.), Haidvogel, D.B., Taskinoglu, E.S. and Skeen, A. J. (2011) A comparison between laboratory and numerical simulations of gravity-driven coastal currents with a geostrophic theory. In: 64th Annual Meeting of the APS Division of Fluid Dynamics , Baltimore, Maryland, Nov 20-22, 2011. Published in: Bulletin of the American Physical Society, Vol.56 (No.18). pp. 348-349.

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Abstract

Laboratory and numerical simulations of buoyant, gravity-driven coastal currents are summarized and compared to the inviscid geostrophic theory of Thomas \& Linden 2007. {Thomas, P. J. and Linden, P.F. 2007. Rotating gravity currents: small-scale and large-scale laboratory experiments and a geostrophic model. {J. Fluid Mech.} {578}, 35-65}. The lengths, widths and velocities of the buoyant currents are studied. Agreement between the laboratory and numerical experiments and the geostrophic theory is found to depend on two non-dimensional parameters which characterize, respectively, the steepness of the plumes isopycnal interface and the strength of horizontal viscous forces (quantified by the horizontal Ekman number). The best agreement between experiments (both laboratory and numerical) and the geostrophic theory are found for the least viscous flows. At elevated values of the horizontal Ekman number, laboratory and numerical experiments depart more significantly from theory.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QC Physics T Technology > TC Hydraulic engineering. Ocean engineering
Divisions:	Faculty of Science > Engineering
Journal or Publication Title:	Bulletin of the American Physical Society
Publisher:	American Physical Society
ISSN:	0003-0503
Date:	November 2011
Volume:	Vol.56
Number:	No.18
Page Range:	pp. 348-349
Status:	Not Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access
Conference Paper Type:	Paper
Title of Event:	64th Annual Meeting of the APS Division of Fluid Dynamics
Type of Event:	Other
Location of Event:	Baltimore, Maryland
Date(s) of Event:	Nov 20-22, 2011
URI:	http://wrap.warwick.ac.uk/id/eprint/46733

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