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Investigation of the characteristics of particulate flows through fibrous filters using the lattice Boltzmann method

查看全文 作　　者：Marzie Babaie [1]Rabiee;Shahram [1]Talebi;Omid [2]Abouali;Ehsan [3]Izadpanah 高影响力作者 机构地区：[1]Department of Mechanical Engineering,Yazd University;[2]Department of Mechanical Engineering,Shiraz University;[3]Department of Mechanical Engineering,Persian Gulf University高影响力机构 出　　处：《Particuology》索引2015年第13卷第4期,共9页高影响力期刊 摘　　要：A fibrous filter is one of the most common systems used to separate suspended particles from air.Two important factors(i.e.,the pressure drop and capture efficiency) are usually used to evaluate the performance of this type of filter.This study considers three two-dimensional arrangements of fibers(parallel,staggered,and random) to geometrically model fibrous media.The lattice Boltzmann method is employed to numerically simulate fluid flow through the filter.The Lagrangian form of the equation of motion of a particle is numerically solved to track the path of each particle in the flow field,where a one-way interaction between the fluid and particles is considered.The effects of pertinent parameters such as the fiber arrangement,solid volume fraction,particle-to-fiber diameter ratio,particle-to-fluid density ratio,Reynolds number,Stokes number,and size of the fibrous medium on the pressure drop and capture efficiency are studied.The obtained results are compared with existing empirical and theoretical findings and discussed. 关 键 词：颗粒流 格子 纤维过滤器 特性 流体流动 固相体积分数 悬浮颗粒 几何模型
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