|
个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 精细化工全国重点实验室主任，教育部智能材料化工前沿科学中心执行主任，大连理工大学膜科学与技术研究开发中心主任
性别：女
毕业院校：中国科学院大连化物所
学位：博士
所在单位：化工学院
学科：化学工程. 膜科学与技术. 生物医学工程
联系方式：hgaohong@dlut.edu.cn
电子邮箱：hgaohong@dlut.edu.cn
CFD study on the effect of baffle arrangements on flow patterns in tubular membrane channel
点击次数：
论文类型：期刊论文
发表时间：2017-05-01
发表刊物：DESALINATION AND WATER TREATMENT
收录刊物：SCIE、Scopus
卷号：75
页面范围：10-17
ISSN号：1944-3994
关键字：CFD; Turbulence promoter; Microfiltration; Membrane fouling; Flux enhancement
摘要：A computational fluid dynamics (COD) study was conducted to simulate turbulent flows in tubular membrane channel with different baffle arrangements, i.e., wall baffle, central baffle and baffle combination (combined use of two types of baffle). It reveals that baffle combination generates a rather more complex flow fields within membrane module than single type of baffle, thereby causing the more intense fluctuations of crossflow velocity or wall shear stress and producing the fairly higher turbulence level of fluid flow. Baffle combination can greatly enhances the eddy mixing action in the inter-baffle regions, resulting in the uniform distribution of particle concentration in the vicinity of membrane surfaces. COD simulation suggests that baffle combination can achieve better membrane filtration performance than single type of baffle, which was validated by the microfiltration experiment.