Turbulent compressible fluid: Renormalization group analysis, scaling regimes, and anomalous scaling of advected scalar fields

N. V. Antonov, N. M. Gulitskiy, M. M. Kostenko, T. Lucivjansky

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13 Scopus citations

Abstract

We study a model of fully developed turbulence of a compressible fluid, based on the stochastic Navier-Stokes equation, by means of the field-theoretic renormalization group. In this approach, scaling properties are related to the fixed points of the renormalization group equations. Previous analysis of this model near the real-world space dimension 3 identified a scaling regime [N. V. Antonov et al., Theor. Math. Phys. 110, 305 (1997)]. The aim of the present paper is to explore the existence of additional regimes, which could not be found using the direct perturbative approach of the previous work, and to analyze the crossover between different regimes. It seems possible to determine them near the special value of space dimension 4 in the framework of double y and ε expansion, where y is the exponent associated with the random force and ε = 4 − d is the deviation from the space dimension 4.Our calculations show that there exists an additional fixed point that governs scaling behavior. Turbulent advection of
Original languageEnglish
Pages (from-to)033120
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume95
DOIs
StatePublished - 2017

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