A COMPARISON OF BROWNIAN AND TURBULENT-DIFFUSION

被引：55

作者：

OUNIS, H

AHMADI, G

机构：

[1] Department of Mechanical and Industrial Engineering, Clarkson University, Potsdam, NY

来源：

AEROSOL SCIENCE AND TECHNOLOGY | 1990年 / 13卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/02786829008959423

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Diffusion of submicron particles suspended in a turbulent flow is studied. The Lagrangian equation of motion of particles in an isotropic turbulent flow field including the Brownian effect is considered. The spectral method is used and analytical expressions for particle response statistics are derived. Variations of particle Brownian and turbulent diffusivities with particle size, density ratio, and flow Reynolds number are studied, and the relative importance of Brownian and turbulence effects are discussed. It is shown that turbulence effects generally dominate Brownian effects. © 1990 United Kingdom Atomic Energy Authority.

引用

页码：47 / 53

页数：7

共 26 条

[1]

AHMADI G, 1973, PNEUMOTRANSPORT, V2

[2]

AHMADI G, 1970, FMTR703 PURD U TECHN

[3]

Ahmadi G., 1970, THESIS PURDUE U

[4]

AHMADI G, 1972, IRANIAN J SCI TECHNO, V1, P301