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TVT, 2008, Volume 46, Issue 2, Pages 262–270 (Mi tvt1047)  

Heat and Mass Transfer and Physical Gasdynamics

A nonlinear critical layer in nonequilibrium gas

I. P. Zavershinskii, E. Ya. Kogan, V. N. Knestyapin

S. P. Korolyov Samara State Aerospace University

Abstract: The method of matched asymptotic expansions is used to analyze the evolution of disturbances of a nonequilibrium compressible boundary layer on a flat plate in the region of nonlinear critical layer. A dispersion relation is obtained for low-amplitude subsonic disturbances. An equation is derived, which describes the evolution of disturbance in the nonlinear stage of its development. It is demonstrated that, similar to the case of equilibrium media, the increase in the disturbance amplitude in the given stage of development of turbulence exhibits an explosive pattern. The characteristic time of instability decreases with increasing degree of disequilibrium of the medium.

Full text: PDF file (829 kB)

English version:
High Temperature, 2008, 46:2, 234–242

Bibliographic databases:

UDC: 534.2
PACS: 47.20.lb, 47.27.nb, 47.70.nd
Received: 18.04.2006

Citation: I. P. Zavershinskii, E. Ya. Kogan, V. N. Knestyapin, “A nonlinear critical layer in nonequilibrium gas”, TVT, 46:2 (2008), 262–270; High Temperature, 46:2 (2008), 234–242

Citation in format AMSBIB
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\paper A nonlinear critical layer in nonequilibrium gas
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\vol 46
\issue 2
\pages 262--270
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\jour High Temperature
\yr 2008
\vol 46
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\pages 234--242
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