Diffusion of a passive impurity in a random velocity field

10th International Conference on Aerophysics and Physical Mechanics of Classical and Quantum Systems

物理学;力学

Teodorovich, E.V.^1

A. Ishlinsky Institute for Problems in Mechanics, RAS Vernadsky Street 101(1), Moscow

119526, Russia^1

关键词: Concentration fluctuation;    External sources;    Impurity concentration;    Mean concentrations;    Method of characteristics;    Pair correlations;    Random velocity fields;    Statistical descriptions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/815/1/012014/pdf
DOI  :  10.1088/1742-6596/815/1/012014

学科分类：力学，机械学

来源: IOP

【 摘 要 】

The method of characteristic functional is used for statistical description of the impurity concentration distribution in the random velocity field. A closed set of equations for a mean concentration response to a change of the external source density and for a pair correlation of the concentration fluctuations is obtained.