2012•arXiv (Cornell University)Open access

Euler equations and turbulence: analytical approach to intermittency

Alexey Cheskidov, Roman Shvydkoy

Abstract

Physical models of intermittency in fully developed turbulence employ many phenomenological concepts such as active volume, region, eddy, energy accumulation set, etc, used to describe non-uniformity of the energy cascade. In this paper we give those notions a precise mathematical meaning in the language of the Littlewood-Paley analysis. We further use our definitions to recover scaling laws for the energy spectrum and second order structure function with proper intermittency correction.

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Key concepts: Intermittency, Energy cascade, Turbulence, Statistical physics, Cascade, Energy (signal processing), Euler's formula, Set (abstract data type)