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A note on the structure of the head of an intrusive gravity current

Published online by Cambridge University Press:  20 April 2006

R. E. Britter  and
J. E. Simpson
R. E. Britter
Affiliation:
Department of Engineering, University of Cambridge
J. E. Simpson
Affiliation:
Department of Applied Mathematics and Theoretical Physics, University of Cambridge
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Abstract

The head of an intrusive flow advancing along the interface between two fluids is studied experimentally when the two layers are of equal depth and the density of the intrusion is the mean of the two densities. The dependence of the flow on the interface thickness and the depth of the intrusion is determined. When the interface is very thin the flow is similar to the nominally inviscid gravity currents observed by Britter & Simpson (1978).

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 112 , November 1981 , pp. 459 - 466
Copyright
© 1981 Cambridge University Press

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References

Amen, R. & Maxworthy, T. 1980 The gravitational collapse of a mixed region into a linearly stratified fluid. J. Fluid Mech. 96, 65–80.Google Scholar
Barr, D. I. H. 1967 Densimetric exchange flow in rectangular channels. III. Large scale experiments. La Houille Blanche 6, 619–631.Google Scholar
Benjamin, T. B. 1968 Gravity current and related phenomena. J. Fluid Mech. 31, 209–248.Google Scholar
Britter, R. E. & Simpson, J. E. 1978 Experiments on the dynamics of a gravity current head. J. Fluid Mech. 88, 223–240.Google Scholar
Faust, K. 1976 Zweidimensionale Ausbreitung in einem geschichteten Fluid. Diploma-Thesis, Karlsruhe University.
Gregg, M. C. 1975 Microstructure and intrusions in the California Current. J. Phys. Oceanography 5, 253–278.Google Scholar
Holyer, J. Y. & Huppert, H. E. 1980 Gravity currents existing in a two layer fluid. J. Fluid Mech. 100, 739–769.Google Scholar
Keulegan, G. H. 1958 The motion of saline fronts in still water. U.S. Nat Bur. Stand., Rep. No. 5831.
Linden, P. F. 1980 Mixing across a density interface produced by grid turbulence. J. Fluid Mech. 100, 691–703.Google Scholar
Manins, P. C. 1976 Intrusion into a stratified fluid. J. Fluid Mech. 74, 547–560.Google Scholar
Masuda, A. & Nagata, Y. 1974 Water wedge advancing along the interface between two homogeneous layers. J. Ocean. Soc. Japan 30, 39–46.Google Scholar
Maxworthy, T. 1980 On the formation of nonlinear internal waves from the gravitational collapse of mixed regions in two and three dimensions. J. Fluid Mech. 96, 47–64.Google Scholar
Simpson, J. E. 1972 Effects of the lower boundary on the head of a gravity current. J. Fluid Mech. 53, 759–768.Google Scholar
Simpson, J. E. & Britter, R. E. 1979 The dynamics of the head of a gravity current advancing over a horizontal surface. J. Fluid Mech. 94, 477–495.Google Scholar
Thorpe, S. 1973 Turbulence in stably stratified fluids: A review of laboratory experiments. Boundary-Layer Met. 5, 95–119.Google Scholar
Wu, J. 1969 Mixed region collapse with internal wave generation in a density-stratified medium. J. Fluid Mech. 35, 531–544.Google Scholar
Yih, C. S. 1965 Dynamics of Non-homogeneous Fluids. Academic Press.