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
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
收藏
页码:349 / 367
页数:19
相关论文
共 40 条
  • [31] Swanson, The development of a formula for direct determination of free settling velocity of any size particle, Trans. SME/AIME, 238, pp. 160-166, (1967)
  • [32] Swanson, Modification to Swanson's free settling equation, Trans. SME/AIME, 258, pp. 102-103, (1975)
  • [33] Taneda, Rep. Res. Inst. Appl. Mech., 4, (1956)
  • [34] Tomotika, Reports and Memoranda No. 1678, (1936)
  • [35] Goldstein, (1965)
  • [36] Tomotika, Amai, On the separation from laminar to turbulent flow in boundary layers, Rep. Aero. Res. Inst. Tokyo, 13, pp. 389-423, (1938)
  • [37] Rosenhead, (1963)
  • [38] Torobin, Gauvin, Fundamental aspects of solid-gas flow Part 1, The Canadian Journal of Chemical Engineering, 37, pp. 129-141, (1959)
  • [39] Torobin, Gauvin, Fundamental aspects of solid-gas flow Part 2, The Canadian Journal of Chemical Engineering, 37, pp. 167-176, (1959)
  • [40] Zenz, Othmer, Fluidization and Fluid-Particle Systems, (1966)