Incipient motion of individual particles in horizontal particle-fluid systems: B. Theoretical analysis

被引：50
|
作者：
Rabinovich, Evgeny [1 ]
Kalman, Haim [1 ]
机构：
[1] Ben Gurion Univ Negev, Lab Conveying & Handling Particulate Solids, Dept Mech Engn, IL-84105 Beer Sheva, Israel
来源：
POWDER TECHNOLOGY | 2009年 / 192卷 / 03期
关键词：
Incipient motion; Pickup velocity; Individual particle; Horizontal conveying systems; Force and moment analysis; SHEAR-FLOW; VELOCITIES; SURFACES; PICKUP; LIFT;
D O I：
10.1016/j.powtec.2009.01.014
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
This paper presents a theoretical analysis of the force and moment balance during incipient motion of a single particle. The analysis showed that large particles start their motion by rolling for spherical particles and by sliding for non-spherical particles. It also showed that fine spherical or near spherical powders start their motion by rolling. The theoretical analysis shown that the incipient motion velocity of individual particles for all fluid, system and particle properties might be presented as power relationships between the Reynolds and Archimedes numbers. (c) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：326 / 338
页数：13
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