Drag coefficient and settling velocity for particles of cylindrical shape

被引：87

作者：

Gabitto, Jorge ^{[1
,2
]}

Tsouris, Costas ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[2] Prairie View A&M Univ, Dept Chem Engn, Prairie View, TX 77446 USA

来源：

POWDER TECHNOLOGY | 2008年 / 183卷 / 02期

关键词：

drag coefficient; drag force; settling velocity; terminal velocity; cylindrical particles;

D O I：

10.1016/j.powtec.2007.07.031

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Solid particles of cylindrical shape play a significant role in many separations processes. Explicit equations for the drag coefficient and the terminal velocity of free-falling cylindrical particles have been developed in this work. The developed equations are based on available experimental data for falling cylindrical particles in all flow regimes. The aspect ratio (i.e., length-over-diameter ratio) has been used to account for the particle shape. Comparisons with correlations proposed by other researchers using different parameters to account for the geometry are presented. Good agreement is found for small aspect ratios, and increasing differences appear when the aspect ratio increases. The aspect ratio of cylindrical particles satisfactorily accounts for the geometrical influence on fluid flow of settling particles. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：314 / 322

页数：9

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