Particle deposition and detachment in capillary sphere packings

被引：15

作者：

Riefler, Norbert ^{[1
]}

Heiland, Michael ^{[1
]}

Waske, Anja ^{[2
]}

Raebiger, Norbert ^{[1
]}

Odenbach, Stefan ^{[2
]}

Fritsching, Udo ^{[3
]}

机构：

[1] Univ Bremen, Inst Umweltverfahrenstech, D-28359 Bremen, Germany

[2] Tech Univ Dresden, Lehrstuhl Magnetofluiddynam, D-01062 Dresden, Germany

[3] Inst Werkstofftech, D-28359 Bremen, Germany

来源：

CHEMICAL ENGINEERING JOURNAL | 2011年 / 174卷 / 01期

关键词：

Porous body; Sphere packings; Computational fluid dynamic CFD; Filtration; Particle deposition plus detachment; SINGLE-COLLECTOR EFFICIENCY; DEEP-BED FILTRATION; POROUS-MEDIA; PHYSICOCHEMICAL FILTRATION; CORRELATION EQUATION; PLANE WALL; FLOW; PREDICTION; REMOVAL; MOTION;

D O I：

10.1016/j.cej.2011.08.055

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Flow simulations in a random sphere packing are used to investigate particulate filtration processes. The local wall shear stress is used to calculate an angular dependent distribution for particle detachment. Simulations of particle deposition by interceptions yield the angular dependent number of impacts. The results from particle detachment calculations and the interception analysis are combined to estimate local particle deposition rates, employing probabilities for detachment and impact. Comparison with X-ray computer tomography of deposited particles within a sphere packing shows good agreement. Therefore, the presented simulation procedure can be used for the design of, e.g., particle filtration apparatus. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：93 / 101

页数：9

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