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An Experimental Study With Minimum Transport Velocity of Dilute Gas-Solid Two-Phase Flow in a Vertical Pipe

[+] Author Affiliations
Mitsuaki Ochi, Masahiro Takei

Nihon University, Tokyo, Japan

Hiroshi Nishimura

Amano Corporation, Shizuoka, Japan

Paper No. FEDSM2003-45731, pp. 455-460; 6 pages
  • ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference
  • Volume 1: Fora, Parts A, B, C, and D
  • Honolulu, Hawaii, USA, July 6–10, 2003
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 0-7918-3696-7 | eISBN: 0-7918-3673-8
  • Copyright © 2003 by ASME


A simple empirical equation of the minimum transport velocity of a dilute two-phase flow for granular solids in a vertical pipe has been derived on the basis of both a dynamic model equation and the transport experiment. The minimum transport velocity means here the limiting air velocity at which conveying is possible in a state in which particles are not stagnant or recircular in the pipe. As a result, it is found that the empirical equation of the minimum transport velocity, simply called the minimum velocity, can arrange the data of this study with a pretty good accuracy.

Copyright © 2003 by ASME
Topics: Pipes , Two-phase flow



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