FREE OBJECT MOTION IN A GAS FLUIDIZED BED
- 1 October 1986
- journal article
- Published by Taylor & Francis in Chemical Engineering Communications
- Vol. 47 (4-6) , 247-272
- https://doi.org/10.1080/00986448608911767
Abstract
The presence probability, the characteristic motions and the velocity of various “light” objects freely immersed in a gas fluidized bed of “heavy” fine particles have been investigated as a function of superficial fluid velocity, powder characteristics and bed height. The displacement of objects through the bed has been shown to result from both a “deterministic” dynamic force equilibrium and a “stochastic” stirring effect due to bubbles. A specific gas velocity exists at which a deep change in mixing occurs: above it the stirring effect is fairly noticeable, while below it pseudo-hydrostatic effects prevail. A method has been proposed to estimate this characteristic value. © 1986, Taylor & Francis Group, LLC. All rights reserved.SCOPUS: ar.jinfo:eu-repo/semantics/publisheKeywords
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