膜科学与技术

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Simulating to optimize the fiber filter based on porous model

Authors： LI Xiaohu，ZHANG Youchen， LI Haoyi，DING Yumei，YANG Weimin *

Units： College of Electromechanical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

KeyWords： fiber membrane; porous media; exit position; particle tracking

ClassificationCode：TQ051. 8

year,volume(issue):pagination： 2015,35(1):23-27

Abstract：

In order to explore the internal flow field of the fiber filter, numerical simulation was carried out using CFD software FLUENT. This study centered on the influence of exit position of filter on the filtration efficiency, which were evaluated from velocity distribution, pressure drop, particle distribution and so on. The results showed that, the pressure drop of membranes was proportionate to the filtration velocity, while the pressure after membrane decreased with the increasing velocity. The model of side outlet had water dead zone and uneven distribution of particles which would reduce the usage rates of membrane. Placing the side outlet at the bottom of the container could effectively reduce the disadvantages. The model of bottom outlet could show the advantages of porous media more prominent than the model of side outlet.

Funds：

北京市自然科学基金资助项目（2141002）

AuthorIntro：

李小虎（1988- ），男，湖北随州市人，硕士研究生，研究方向为熔体静电纺丝法制备过滤膜及其性能的研究。

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