PROBABILITY-DISTRIBUTION OF A PASSIVE SCALAR - A SOLUBLE EXAMPLE

被引：3
|
作者：
GOLDHIRSCH, I [1 ]
YAKHOT, A [1 ]
机构：
[1] PRINCETON UNIV,PROGRAM APPL & COMPUTAT MATH,PRINCETON,NJ 08544
来源：
PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1990年 / 2卷 / 08期
关键词：
D O I：
10.1063/1.857578
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The probability distribution, in space, of a passive scalar advected by a model, divergence-free, velocity field is analytically calculated. It is found to have a logarithmic singularity at the origin and a quasi-Gaussian decay away from it. The significance of this result for the general case of convection of passive scalars and the relation to a recent theory of Yakhot and Sinai [Phys. Rev. Lett. 63, 1962 (1989)] are discussed. © 1990 American Institute of Physics.
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页码：1303 / 1305
页数：3
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