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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2016 Volume 104, Issue 10, Pages 695–700 (Mi jetpl5115)

This article is cited in 10 papers

PLASMA, HYDRO- AND GAS DYNAMICS

Development of high vorticity in incompressible 3D Euler equations: Influence of initial conditions

D. S. Agafontsevab, E. A. Kuznetsovbc, A. A. Mailybaevd

a Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
b Novosibirsk State University, Novosibirsk, Russia
c Lebedev Physical Institute, Russian Academy of Sciences, Moscow, Russia
d Instituto Nacional de Matemática Pura e Aplicada – IMPA, Rio de Janeiro, Brazil

Abstract: The incompressible three-dimensional ideal flows develop very thin pancake-like regions of increasing vorticity. These regions evolve with the scaling $\omega_{\max}(t)\propto\ell(t)^{-2/3}$ between the vorticity maximum and pancake thickness, and provide the leading contribution to the energy spectrum, where the gradual formation of the Kolmogorov interval $E_{k}\propto k^{-5/3}$ is observed for some initial flows. With the massive numerical simulations, we study the influence of initial conditions on the processes of pancake formation and the Kolmogorov energy spectrum development.

Received: 19.09.2016

DOI: 10.7868/S0370274X16220069


 English version:
Journal of Experimental and Theoretical Physics Letters, 2016, 104:10, 685–689

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