Discrete Element Modeling of Gas Fluidization of Fine Ellipsoidal Particles

被引：3

作者：

Gan, Jieqing ^{[1
]}

Zhou, Zongyan ^{[1
]}

Zou, Ruiping ^{[1
]}

Yu, Aibing ^{[1
]}

机构：

[1] Univ New S Wales, Sch Mat Sci & Engn, Lab Simulat & Modeling Particulate Syst, Sydney, NSW 2052, Australia

来源：

POWDERS AND GRAINS 2013 | 2013年 / 1542卷

关键词：

fluidization; fine particles; ellipsoids; discrete element method; SIMULATION;

D O I：

10.1063/1.4812135

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Particle properties are important factors affecting gas fluidization. In the present work, the effects of particle size and shape on the fluidization characteristics are studied using the combined approach of computational fluid dynamics for gas phase and discrete element method for particles. It shows that a bed becomes loosely packed when particle size becomes small. The minimum fluidization velocity increases exponentially with the increase of particle size. Higher minimum bubbling velocities are predicted for ellipsoidal particles compared with spherical ones. "Chain phenomenon" exists in the expanded and fluidized beds for fine prolate particles.

引用

页码：1130 / 1133

页数：4

共 10 条

[1] BEHAVIOR OF GAS-FLUIDIZED BEDS OF FINE POWDERS .1. HOMOGENEOUS EXPANSION [J].