Abstract
The incompressible three-dimensional ideal flows develop very thin pancake-like regions of increasing vorticity. These regions evolve with the scaling ωmax(t) ∝ l(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 ∝ 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.
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Published in Russian in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2016, Vol. 104, No. 10, pp. 695–700.
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Agafontsev, D.S., Kuznetsov, E.A. & Mailybaev, A.A. Development of high vorticity in incompressible 3D Euler equations: Influence of initial conditions. Jetp Lett. 104, 685–689 (2016). https://doi.org/10.1134/S002136401622001X
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DOI: https://doi.org/10.1134/S002136401622001X