Turbulence and Diffusion - Oleg G. Bakunin

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Résumé :
This book is intended to serve as an introduction to the multidisciplinary ?eld of anomalous diffusion in complex systems such as turbulent plasma, convective rolls, zonal ?ow systems, stochastic magnetic ?elds, etc. In spite of its great importance, turbulent transport has received comparatively little treatment in published mo- graphs. This book attempts a comprehensive description of the scaling approach to turbulent diffusion. From the methodological point of view, the book focuses on the general use of correlation estimates, quasilinear equations, and continuous time random walk - proach. I provide a detailed structure of some derivations when they may be useful for more general purposes. Correlation methods are ?exible tools to obtain tra- port scalings that give priority to the richness of ingredients in a physical pr- lem. The mathematical description developed here is not meant to provide a set of recipes for hydrodynamical turbulence or plasma turbulence; rather, it serves to develop the reader's physical intuition and understanding of the correlation mec- nisms involved.

Sommaire:
Turbulent Diffusion Concepts.- Turbulent Diffusion and Scaling.- Nonlocal Effects and Diffusion Equations.- Correlation Effects and Scalings.- Diffusive Renormalization and Correlations.- Diffusion Equations and the Quasilinear Approximation.- Return Effects and Random Shear Flows.- Turbulence of Magnetic Field Lines.- Stochastic Instability and Turbulence.- Anomalous Transport and Convective Cells.- Fractals and Percolation Transport.- Fractal and Percolation Concepts.- Percolation and Turbulent Transport.- Multiscale Approach and Scalings.- Trapping and the Escape Probability Formalism.- Subdiffusion and Trapping.- Continuous Time Random Walks and Transport Scalings.- Correlation and Phase-Space.

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