Two-particle stochastic Eulerian-Lagrangian models of turbulent dispersion

被引：5
|
作者：
Sabelfeld, KK
Kurbanmuradov, O
机构：
[1] Russian Acad Sci, Ctr Comp, Novosibirsk 630090, Russia
[2] Turkmen Acad Sci, Sci Tech Ctr Climate, Ashkhabad 744000, Turkmenistan
来源：
MATHEMATICS AND COMPUTERS IN SIMULATION | 1998年 / 47卷 / 2-5期
关键词：
Langrangian and Eulerian stochastic models; turbulent dispersion; Richardson's cubic rule;
D O I：
10.1016/S0378-4754(98)00124-4
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A two-particle stochastic model of turbulent dispersion in the classical isotropic pseudoturbulence is suggested. The main idea is to describe the relative motion of two particles in small scales by a stochastic differential equation, while the dispersion in large scales is governed by the Eulerian stochastic model. This leads to the nice property of the new model: in small scales it describes properly the Richardson cubic law, and at large scales it approximates well the "two-to-one" reduction principle. (C) 1998 Published by IMACS/Elsevier Science B.V.
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页码：429 / 440
页数：12
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