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Bubble chord length distribution in three-phase fluidized beds

✍ Scribed by Joo Hee Han; Sang Done Kim

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
625 KB
Volume
48
Category
Article
ISSN
0009-2509

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✦ Synopsis

Three ideal bubble chord length distributions have been derived for three different bubble shanes (spherical, ellipsoidal and spherical-cap). The measured chord length distributions in three-phase fluidikd beds have been analyzed by the combined bubble length distribution model baaed on the ellipsoidal and spherical-cap bubble shapes. The combined bubble length distribution predicts well the measured bubble length distribution in three-phase fluidized beds. It has been found that the distribution approaches that for ellipsoidal-shaped bubbles in the bubble-disintegrating regime and that for spherical-cau-shaned bubbles in the bubble-coalescing regime and/or in the slug flow &me.

The ellipsoidal-bubble fraction-haxeases with increasing liquid velocity and particle size, but decreases with increasing gas velocity and liquid viscosity.

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