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Simple model of the Rayleigh-Taylor instability, collapse, and structural elements

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2013
auteur(s) Goncharov V.P.; Pavlov Vadim
journal (abréviation) Physical Review E (Phys. Rev. E)
volume (numéro) 88
numéro de papier 023002
  
résumé The mechanisms and structural elements of the Rayleigh-Taylor instability whose evolution results in the occurrence of the collapse have been studied in the scope of the rotating shallow water model with horizontal density gradient. Analysis of the instability mechanism shows that two collapse scenarios are possible. One scenario implies anisotropic collapse during which the contact area of a collapsing fragment with the bottom contracts into a spinning segment. The other implies isotropic contracting of the area into a point. The rigorous integral criteria and power laws of collapses are found.
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