Characterization of the void size distribution in fluidized beds using statistics of pressure fluctuations

Experiments carried out in fluidized beds of Geldart A and B powders revealed that in-bed pressure fluctuations typically have power-law statistics, which are well described by the Student's distribution. We show that the pressure statistics encode information about the bubble size distribution...

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Bibliographic Details
Published in:Powder technology 2005-12, Vol.160 (2), p.81-92
Main Authors: Bai, B., Gheorghiu, S., van Ommen, J.R., Nijenhuis, J., Coppens, M.-O.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Fluidization
Miscellaneous
Solid-solid systems
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Summary:Experiments carried out in fluidized beds of Geldart A and B powders revealed that in-bed pressure fluctuations typically have power-law statistics, which are well described by the Student's distribution. We show that the pressure statistics encode information about the bubble size distribution, and propose a novel method that allows an easy determination of the approximate shape of the bubble size distribution from the statistics of pressure fluctuations.
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2005.08.031