A STOCHASTIC-MODEL FOR THE DISPERSION OF A NONPASSIVE SCALAR IN A TURBULENT FIELD

被引：6

作者：

KAPLAN, H

DINAR, N

机构：

[1] Israel Institute for Biological Research, Ness-Ziona

来源：

ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS | 1992年 / 26卷 / 13期

关键词：

NONPASSIVE SCALARS; TURBULENT FIELDS; LAGRANGIAN MODELING; BOUNDARY LAYER; FREE CONVECTIVE; CONSTANT FLUX; NEUTRAL;

D O I：

10.1016/0960-1686(92)90371-Q

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work a Lagrangian stochastic model is developed to describe the dispersion of a non-passive scalar in a turbulent medium. It is assumed that the particle is accelerated by an external force which does not change the turbulence properties. The motion of the particle is determined independently by the external force and by the turbulent field. The model is applied to the problem of falling droplets in the atmosphere. Three types of turbulence are studied: homogeneous isotropic turbulence, constant flux neutral boundary layer and free convective layer.

引用

页码：2413 / 2423

页数：11

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