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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2006, Volume 84, Issue 7, Pages 459–465
(Mi jetpl1156)
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This article is cited in 8 scientific papers (total in 8 papers)
PLASMA, GASES
Dominant structures in jet streams
V. P. Goncharova, V. I. Pavlovb a A. M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences
b UFR de Mathématiques Pures et Appliquées, Université de Lille 1, 59655 Villeneuve d'Ascq, France
Abstract:
A Hamiltonian version has been formulated for the model of axisymmetric equally rotating jet streams with a free boundary. In the framework of this approach, dominant structures, i.e., structure elements appearing in strongly disturbed jet streams at the preturbulent stage of their decay, are studied. It has been shown that compactons, i.e., solution with a compact support, can be such dominant structures. Analysis of the mechanism of the instability of compactons shows the possibility of collapse, which occurs almost without deformation of their shape but leads to the intensification of the vortex sheet at the boundary according to the law (t 0 − t)−1, where t 0 is the collapse time.
Received: 29.05.2006 Revised: 28.08.2006
Citation:
V. P. Goncharov, V. I. Pavlov, “Dominant structures in jet streams”, Pis'ma v Zh. Èksper. Teoret. Fiz., 84:7 (2006), 459–465; JETP Letters, 84:7 (2006), 384–390
Linking options:
https://www.mathnet.ru/eng/jetpl1156 https://www.mathnet.ru/eng/jetpl/v84/i7/p459
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Abstract page: | 206 | Full-text PDF : | 59 | References: | 38 |
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