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Intrusions propagating into linearly stratified ambients

Published online by Cambridge University Press:  13 April 2018

M. A. Khodkar ,
K. El Allam  and
E. Meiburg Open the ORCID record for E. Meiburg [Opens in a new window]
M. A. Khodkar
Affiliation:
Department of Mechanical Engineering, University of California at Santa Barbara, Santa Barbara, CA 93106, USA
K. El Allam
Affiliation:
Department of Mechanical Engineering, University of California at Santa Barbara, Santa Barbara, CA 93106, USA Graduate School of Engineering, ENSEIRB-MATMECA, 33400 Talence, France
E. Meiburg*
Affiliation:
Department of Mechanical Engineering, University of California at Santa Barbara, Santa Barbara, CA 93106, USA
*
†Email address for correspondence: meiburg@engineering.ucsb.edu
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Abstract

Equilibrium and non-equilibrium intrusions released from long, full-depth locks and advancing into linearly stratified ambients are investigated via a vorticity-based modelling approach, for the constant-velocity slumping phase. Non-equilibrium intrusions give rise to an upstream-propagating wave, which we model as a bore. Predictions by the vorticity model agree closely with two-dimensional direct numerical simulation results and earlier experimental and computational data regarding front velocities, current thicknesses as well as the height and propagation velocity of the bore.

JFM classification

Geophysical and Geological Flows: Geophysical and Geological Flows Geophysical and Geological Flows: Gravity currents Geophysical and Geological Flows: Stratified flows
Type
JFM Papers
Information
Journal of Fluid Mechanics , Volume 844 , 10 June 2018 , pp. 956 - 969
Copyright
© 2018 Cambridge University Press 

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