"Generalized Fluidization" Revisited
"Generalized Fluidization" Revisited
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DOI：
10.1021/ie3034653
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发表时间：
2013-02
影响因子：
4.2
通讯作者：
A. Ullah;W. Wang;Jinghai Li
中科院分区：
文献类型：
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作者：
A. Ullah;W. Wang;Jinghai Li
Kwauk[中国科学，1963,12(4)，587-612]和Kwauk[科学出版社，北京：1992]为稳态运动下的流态化绘制了广义流态化图。在本文中，我们试图扩展Kwauk的工作，并重新绘制图，考虑到中尺度结构对阻力闭合的影响。然后在新图上定义了广义阻塞，该图具有并行流和逆流流双稳态共存的特征。理论预测与实验数据进行了对比，结果表明理论预测与实验数据一致，特别是对逆流气升流和逆流气降流的预测。
The generalized fluidization diagram was drawn by Kwauk [Scientia Sinica, 1963, 12 (4), 587–612] and Kwauk [Science Press, Beijing: 1992] for fluidization under steady-state motion. In this article, we try to extend the work of Kwauk and redraw the diagram by taking into account the effects of mesoscale structures on drag force closure. The generalized choking is then defined on the new diagram, which is characterized by the bistable, coexisting states in both concurrent and countercurrent flows. The theoretical predictions are tested against experimental data, showing fair agreement especially for countercurrent gas-up flows and concurrent-down flows.