Void fraction measurements in bubble columns using computed tomography

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:435787

Kumar, S B; Dudukovic, M P ^[1]; Moslemian, D ^[2]

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1. Washington Univ., St. Louis, MO (United States)
2. Florida Atlantic Univ., Boca Raton, FL (United States). Dept. of Mechanical Engineering

A Computed Tomographic (CT) scanner has been developed for imaging void fraction distributions in two phase flow systems such as bubble columns and fluidized beds. The scanner has been used to study the effects of various operating parameters such as column diameter, superficial gas velocity, distributor type, etc. on the void fraction and its distribution in an air-water bubble column. The results of this experimental investigation are presented and discussed. It was found that the column dimensions have no significant effect on the void fraction when the column diameter is greater than 0.15 m. Differences in the holdup distribution due to the kind of distributor used are significant only at low gas flow rates. Surface tension of the liquid has a profound influence on the void fraction and its distribution.

• OSTI ID: 435787
• Report Number(s): CONF-951135--; ISBN 0-7918-1755-5
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
COLUMN PACKING
COMPUTERIZED TOMOGRAPHY
FLUIDIZED BEDS
HYDRODYNAMICS
PARAMETRIC ANALYSIS
TWO-PHASE FLOW
VOID FRACTION