Abstract:
Within the incompressible three-dimensional Euler equations, we study the pancake-like high vorticity regions, which arise during the onset of developed hydrodynamic turbulence. We show that these regions have an internal fine structure consisting of three vortex layers. Such a layered structure, together with the power law of self-similar evolution of the pancake, prevents development of the Kelvin–Helmholtz instability.
D.S. Agafontsev and E.A. Kuznetsov acknowledge the
support of the Russian Science Foundation (project no. 19-72-30028). D.S. Agafontsev acknowledges the support of
IMPA during the visits to Brazil. A.A. Mailybaev acknowledges the support of Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq, Brazil, grant nos. 303047/2018-6 and 406431/2018-3).
Citation:
D. S. Agafontsev, E. A. Kuznetsov, A. A. Mailybaev, “Stability of tangential discontinuity for the vortex pancakes”, Pis'ma v Zh. Èksper. Teoret. Fiz., 114:2 (2021), 67–71; JETP Letters, 114:2 (2021), 71–75