SETTLING VELOCITIES OF PARTICULATE SYSTEMS .1. SETTLING VELOCITIES OF INDIVIDUAL SPHERICAL-PARTICLES

被引：85

作者：

CONCHA, F

ALMENDRA, ER

机构：

[1] Programa de Engenharia Metalurgica e de Materiais, COPPE Universidade Federal do Rio de Janeiro, Rio de Janeiro

来源：

INTERNATIONAL JOURNAL OF MINERAL PROCESSING | 1979年 / 5卷 / 04期

关键词：

D O I：

10.1016/0301-7516(79)90044-9

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Combining boundary-layer theory and experimental data for the pressure distribution and boundary-layer thickness over the surface of a sphere, the following expression was obtained for the drag coefficient: CD=1+ 9.06 Re 1 22 Using this formula as a basis, an expression was developed for relating the settling velocity of spherical particles to their diameter at any value of the Reynolds Number. The validity of such expressions discussed and compared with experimental data. © 1979.

引用

页码：349 / 367

页数：19

共 40 条

[1] Abraham, Functional dependence of drag coefficient of a sphere on Reynolds, Number. Phys. Fluids, 13, pp. 2194-2195, (1970)
[2] Barnea, Mizrahi, A generalized approach to the fluid dynamics of particulate systems. Part 1. General correlation for fluidization and sedimentation in solid multiparticle systems, Chem. Eng. J., 5, pp. 171-189, (1973)
[3] Batchelor, An Introduction to Fluid Dynamics, (1967)
[4] Becker, The effect of shape and Reynolds Number on drag in the motion of a freely oriented body in an infinite fluid, The Canadian Journal of Chemical Engineering, 37, pp. 85-91, (1959)
[5] Brauer, Sucker, Umströmung von Platten, Zylindern und Kugeln, Chem. Ing. Tech., 48, pp. 665-671, (1976)
[6] Concha, Application of Transport Phenomena to Mineral Dressing, Thesis, pp. 122-124, (1968)
[7] Crabtree, Kuchemann, Sowery, Three-dimensional boundary layers, Laminar Boundary Layers, (1963)
[8] Dallavalle, Micromeritics, (1943)
[9] Dallavalle, Micromeritics, (1948)
[10] Fage, Experiments on a sphere at critical Reynolds Number, Rep. Mem. Aero. Res. Counc. London, 1766, (1937)

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