NDLI: Effect of slugging phenomena on drag coefficient in fluidized beds

Content Provider	IEEE Xplore Digital Library
Author	Bakhtiyarov, S.I. Overfelt, R.A.
Copyright Year	1996
Description	Author affiliation: Space Power Inst., Auburn Univ., AL, USA (Bakhtiyarov, S.I.)
Abstract	The effect of slugging phenomena on the drag coefficient in fluidized beds is assessed by developing theoretical and experimental analyses of this problem. The theoretical analysis of the slugging in fluidized beds was based on a momentum balance equation for the axial flow of gas around a slug and Meshchersky's differential equation of motion of a slug having variable mass. To predict the flow rate of the gas flow through the slug, the authors have used the Blake-Kozeny-Carman equation. From the analytical solution of the problem, the expressions for the pressure drop and the drag coefficient as functions of the Reynolds number, slug porosity, gas viscosity and chamber sizes have been developed. Experiments were run in a fluidization chamber with foundry sand of 2.593 g/cc average density and 30-270 mesh size at three different values of the fixed bed height. The results of simulations demonstrate that both the drag coefficient and the resistance factor decrease with increasing the Reynolds number and increasing the porosity of slug. A comparison of the results obtained in the experiments demonstrates a qualitative agreement with the theoretical model simulations.
Starting Page	793
Ending Page	798
File Size	449841
Page Count	6
File Format	PDF
ISBN	0780335473
ISSN	10893547
DOI	10.1109/IECEC.1996.553798
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-08-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fluidization Drag Differential equations Motion analysis Viscosity Rain Extraterrestrial phenomena Fluid flow Foundries Manufacturing processes
Content Type	Text
Resource Type	Article

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