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arXiv · 1609.07782

Asymptotic solution for high vorticity regions in incompressible 3D Euler equations

D. S. Agafontsev·E. A. Kuznetsov·A. A. Mailybaev
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Abstract

Incompressible 3D Euler equations develop high vorticity in very thin pancake-like regions from generic large-scale initial conditions. In this work we propose an exact solution of the Euler equations for the asymptotic pancake evolution. This solution combines a shear flow aligned with an asymmetric straining flow, and is characterized by a single asymmetry parameter and an arbitrary transversal vorticity profile. The analysis is based on detailed comparison with numerical simulations performed using a pseudo-spectral method in anisotropic grids of up to 972 x 2048 x 4096.

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D. S. Agafontsev, E. A. Kuznetsov, A. A. Mailybaev. 2016-09-25. Asymptotic solution for high vorticity regions in incompressible 3D Euler equations. https://doi.org/10.1017/jfm.2017.1

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