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
收藏
页码：349 / 355
页数：7
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