Pickup (critical) velocity of particles
Pickup (critical) velocity of particles
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DOI：
10.1016/j.powtec.2005.08.009
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发表时间：
2005-12
影响因子：
5.2
通讯作者：
H. Kalman;Andrei Satran;Dikla Meir;E. Rabinovich
中科院分区：
文献类型：
--
作者：
H. Kalman;Andrei Satran;Dikla Meir;E. Rabinovich
这项工作提出了对各种颗粒固体的拾取速度（临界速度）测量的实验结果。目前的实验以及之前发表的一些研究人员的实验包括对24种材料的100次测量，这些材料的颗粒大小、形状和密度范围很广。根据实验结果，通过建立雷诺数和阿基米德数之间的简单关系，确定了三个区域。通过考虑管径和颗粒形状（球度），进一步修正了经验关系。三区模型被证明与Geldart的分类组有合理的关联。
This work presents experimental results on pickup velocity (critical velocity) measurements for a variety of particulate solids. The present experiments together with previously published experiments of a number of researchers encompass about 100 measurements of 24 materials for a wide range of particle sizes, shapes and densities. Based on the experimental results, three zones are defined by establishing simple relationships between the Reynolds and Archimedes numbers. The empirical relationships were further modified by taking into account the pipe diameter and particle shape (sphericity). The three-zone model was shown to reasonably correlate to Geldart's classification groups.