Physics
Scientific paper
Jan 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jfm....96...47m&link_type=abstract
Journal of Fluid Mechanics, vol. 96, Jan. 16, 1980, p. 47-64.
Physics
64
Gravitational Collapse, Internal Waves, Three Dimensional Flow, Two Dimensional Flow, Wave Excitation, Equilibrium Flow, Flow Geometry, Nonlinear Systems, Planetary Atmospheres, Solitary Waves, Stratified Flow
Scientific paper
The paper shows how trains of nonlinear, dispersive waves can be produced by allowing a region of mixed fluid, with a potential energy greater than its surroundings, to collapse towards its equilibrium state. The number of waves and their amplitude depend on the properties of the mixed region and of the ambient stratification. Three different geometrical configurations have been chosen and while each gives qualitatively the same results the form taken by the generated waves and the final equilibrium shape of the mixed region depend critically on these geometrical factors. The internal waves produced by this mechanism are related to waves produced in natural systems and it is shown that the observations support at least one possible explanation for those found in the oceans and planetary atmospheres.
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