Numerical simulation of microparticles transport in a concentric annulus by Lattice Boltzmann Method

被引：21

作者：

Afrouzi, H. Hassanzadeh ^{[1
]}

Farhadi, M. ^{[1
]}

Mehrizi, A. Abouei ^{[1
]}

机构：

[1] Babol Univ Technol, Fac Mech Engn, Babol Sar, Iran

来源：

ADVANCED POWDER TECHNOLOGY | 2013年 / 24卷 / 03期

关键词：

Aerosol particles; Dispersion; Removal; Brownian motion; Concentric annulus; CONVECTION HEAT-TRANSFER; PARTICLE DEPOSITION; NATURAL-CONVECTION; RESPIRATORY-TRACT; MODEL;

D O I：

10.1016/j.apt.2012.10.006

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Dispersion and removal of microaerosol particles are investigated numerically in a horizontal concentric annulus by Lattice Boltzmann Method and Lagrangian Runge-Kutta procedure with the assumption of one-way coupling. Drag, buoyancy, gravity, shear lift, Brownian motion and thermophoretic are forces that are included in particle equation of motion. All simulations were performed at Rayleigh number of 10(4) and particles specific density of 1000. The effect of aspect ratio and particles diameter were determined on particles behavior such as removal and dispersion. Results show that recirculation power increases by decreasing of cylinders gap. Particles move in a thinner quasi-equilibrium region by increasing of their diameter and decreasing of cylinders gap. Brownian motion is dominant removal mechanism in particle with diameter of 1 mu m. (C) 2012 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

引用

页码：575 / 584

页数：10

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