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Flow, Turbulence and Combustion

Erschienen in:

20.01.2017

Effect of Bubble Injection Pattern on the Bubble Size Distribution in a Gas-Solid Fluidized Bed

verfasst von: Mohammad H. Tavassoli-Rizi, Salman Movahedirad, Ahad Ghaemi

Erschienen in: Flow, Turbulence and Combustion | Ausgabe 4/2017

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Abstract

Three different bubble injection patterns including uniform, center oriented and corner oriented injection patterns over the gas distributor have been studied using a discrete bubble model in a 2-D gas solid fluidized bed. The results show that the bubble size and size distribution evolution through the bed are almost the same for uniform and corner oriented bubble injection patterns, but for the case of center oriented injection pattern, the area weighted average bubble diameter (d _b,21) is greater than the others. The results show that in the center oriented injection pattern, many of the small bubbles leave the bed without coalescence and this leads to smaller d _b,10 than two other cases. Moreover, in this work the size distribution evolution through the bed height is investigated in detail.

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Titel: Effect of Bubble Injection Pattern on the Bubble Size Distribution in a Gas-Solid Fluidized Bed
verfasst von: Mohammad H. Tavassoli-Rizi
Salman Movahedirad
Ahad Ghaemi
Publikationsdatum: 20.01.2017
Verlag: Springer Netherlands
Erschienen in: Flow, Turbulence and Combustion / Ausgabe 4/2017
Print ISSN: 1386-6184
Elektronische ISSN: 1573-1987
DOI: https://doi.org/10.1007/s10494-017-9800-7

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