Two-fluid modeling of Geldart A particles in gas-solid micro-fluidized beds

被引：6

作者：

Xiaoxing Liu ^{[1
]}

Chuanqiang Zhu ^{[1
,2
]}

Shujun Geng ^{[1
,2
]}

Meiqin Yao ^{[1
]}

Jinhui Zhan ^{[1
]}

Guangwen Xu ^{[1
]}

机构：

[1] State Key Laboratory of Multi-phase Complex System,Institute of Process Engineering,Chinese Academy of Science

[2] University of Chinese Academy of Sciences

来源：

Particuology | 2015年 / 21卷 / 04期

关键词：

Micro-fluidized bed; Geldart A particle; Two-fluid model; Boundary condition; Drag model;

D O I：

暂无

中图分类号：

TQ051.13 [];

学科分类号：

080706 ;

摘要：

The fluidizadon behavior of Geldart A particles in a gas-solid micro-fluidized bed was investigated by Eulerian-Eulerian numerical simulation.The commonly used Gidaspow drag model was tested first.The simulation showed that the predicted minimum bubbling velocities were significantly lower than the experimental data even when an extremely fine grid size(of approximately one particle diameter) was used.The modified Gibilaro drag model was therefore tested next.The predicted minimum bubbling velocity and bed voidage were in reasonable agreement with the experimental data available in literature.The experimentally observed regime transition phenomena from bubbling to slugging were also reproduced successfully in the simulations.Parametric studies indicated that the solid-wall boundary conditions had a significant impact on the predicted gas and solid flow behavior.

引用

页码：118 / 127

页数：10

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