학술논문

Theoretical aspects of homogenous isotropic turbulence
Document Type
article
Source
Journal of the Brazilian Society of Mechanical Sciences and Engineering. December 2004 26(4)
Subject
Navier-Stokes equations
turbulence
energy cascade
intermittency
Language
English
ISSN
1678-5878
Abstract
We review some recent advances on the problem of fully developed turbulence within the mathematical and physical points of view. From the mathematical perspective, we discuss a framework which has been developed for the rigorous treatment of the conventional statistical theory of turbulence and address some of the rigorous results which have been obtained concerning the energy cascade, the energy spectrum, the energy dissipation rate and other physical quantities of turbulent flows. Regarding the physical approach, we focus our attention on the relevance of field theoretical methods in the analysis of dimensionally reduced models (Burgers and two-dimensional incompressible turbulence), the problem of randomly advected scalars, and intermittent fluctuations in homogeneous and isotropic turbulent flows.