DIFFUSION OF PASSIVE SCALARS UNDER STOCHASTIC CONVECTION

被引：12

作者：

CARETA, A ^{[1
]}

SAGUES, F ^{[1
]}

SANCHO, JM ^{[1
]}

机构：

[1] UNIV BARCELONA, DEPT ESTRUCTURA & CONSTITUENTS MAT, E-08028 BARCELONA, SPAIN

来源：

PHYSICS OF FLUIDS | 1994年 / 6卷 / 01期

关键词：

D O I：

10.1063/1.868089

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The diffusion of passive scalars convected by turbulent flows is addressed here. A practical procedure to obtain stochastic velocity fields with well-defined energy spectrum functions is also presented. Analytical results are derived, based on the use of stochastic differential equations, where the basic hypothesis involved refers to a rapidly decaying turbulence. These predictions are favorable compared with direct computer simulations of stochastic differential equations containing multiplicative space-time correlated noise.

引用

页码：349 / 355

页数：7

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