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JOURNALS // Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences // Archive

Vestn. Samar. Gos. Tekhn. Univ., Ser. Fiz.-Mat. Nauki [J. Samara State Tech. Univ., Ser. Phys. Math. Sci.], 2015 Volume 19, Number 1, Pages 155–185 (Mi vsgtu1418)

This article is cited in 5 papers

Differential Equations and Mathematical Physics

On the inner turbulence paradigm

N. N. Yakovleva, E. A. Lukasheva, E. V. Radkevichb, V. V. Palinb

a Joint-stock company Turaevo Machine-Building Design Bureau "SOYUZ", Lytkarino, 140080, Russian Federation
b Lomonosov Moscow State University, Faculty of Mechanics and Mathematics, Moscow, 119899, Russian Federation

Abstract: In the paper we study the reproducing of the initial phase of the inner turbulence (without regard for the boundary effects). The atypical regularization of multiple-component Euler system is made by the viscosity and diffuse layering introduction. The analogue of Hugoniot condition and the analogue of Lax stability condition are constructed for it. The problem of local accessibility of the phase space points is investigated. The bifurcations of one-front solutions of the abridged Euler system to the two-front solutions are obtained. The supersonic behaviour of bifurcations appearance is shown. The reconstruction of the initial phase of the inner turbulence (without regard for the boundary effects) is made including the mathematical description of the birth of two-speed flow (the Riemann–Hugoniot catastrophe) and alternation.

Keywords: inner turbulence reconstruction, two-speed flow, the Riemann–Hugoniot catastrophe, alternation, bifurcation, Euler system, kinetic equatio.

UDC: 517.958:531.35

MSC: 35Q31, 35B32

Original article submitted 20/XII/2014
revision submitted – 05/II/2015

DOI: 10.14498/vsgtu1418



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