Granular temperature and rotational characteristic analysis of a gas-solid bubbling fluidized bed under different gravities using discrete hard sphere model

被引：14

作者：

Wang, Tianyu ^{[1
]}

He, Yurong ^{[1
]}

Kim, Dong Rip ^{[2
]}

机构：

[1] Harbin Inst Technol, Dept Power Engn, Harbin, Peoples R China

[2] Hanyang Univ, Dept Mech Engn, Seoul 133791, South Korea

来源：

POWDER TECHNOLOGY | 2015年 / 271卷

基金：

中国国家自然科学基金;

关键词：

Granular temperature; Rotational characteristic; Discrete hard sphere model; Different gravities; EULER-EULER; SPOUTED BED; CFD-DEM; SIMULATION; HYDRODYNAMICS; BEHAVIOR; FLOWS; ENVIRONMENTS; VERIFICATION; PRESSURE;

D O I：

10.1016/j.powtec.2014.11.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A gas-solid bubbling fluidized bed was analyzed by using a discrete hard sphere particle model (DPM). Simulation results were validated by matching them to the results of the previous study. Particle translational and rotational characteristics were investigated in terms of gravities to find out their influences on the particle behaviors. The gravity did not significantly affect the particle macro-scale characteristics, such as particle translational velocity and rotational velocity, but acted an important role in particle micro-scale characteristics like granular temperatures. Particularly, the change of gravity affected the change of the bubble behavior and the particles' pulsation movement, which could lead to the transformation of the overall fluidized state. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：35 / 48

页数：14

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