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RESEARCH PAPERS

An Optical Method for Determining Bubble Size Distributions—Part II: Application to Bubble Size Measurement in a Three-Phase Fluidized Bed

[+] Author and Article Information
P. R. Meernik, M. C. Yuen

Department of Mechanical Engineering, Northwestern University, Evanston, IL 60201

J. Fluids Eng 110(3), 332-338 (Sep 01, 1988) (7 pages) doi:10.1115/1.3243552 History: Received January 15, 1987; Online October 26, 2009

Abstract

The light beam technique, described in Part I of a paper with the same title, was applied to a three-phase system (nitrogen, organic solvents, and glass particles) to study the equilibrium bubble size distributions. A range of liquid and gas flow rates, with respective superficial velocities of 1–8 cm/sec and 0.1–1.1 cm/s; and various particles, 2 mm diameter by 5 mm long cylinders and 1 to 5 mm diameter spheres, were considered. Typical average bubble diameters were measured to be in the range of 1.2 to 2 mm. For the range of flow conditions considered, the Sauter mean diameters, normalized by particle size, were found to be proportional to the Eotvos number and essentially independent of the liquid and gas fluxes.

Copyright © 1988 by ASME
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