Drag coefficient of relatively contaminated gas bubbles
作者:
Tsutomu Ishii,
David C. T. Pei,
期刊:
The Canadian Journal of Chemical Engineering
(WILEY Available online 1980)
卷期:
Volume 58,
issue 1
页码: 25-32
ISSN:0008-4034
年代: 1980
DOI:10.1002/cjce.5450580104
出版商: Wiley Subscription Services, Inc., A Wiley Company
数据来源: WILEY
摘要:
AbstractBased on the velocity profiles around clean and relatively contaminated gas bubbles, the tangential and normal stress, pressure distribution at the surface around the gas bubbles, and finally the viscous, form and total drag coefficient of the gas bubbles were calculated and compared with experimental values for dilute aqueous solutions of alcohols. The theory verifies the experimental observation that the total drag coefficient of single gas bubbbles increases with the contamination factor. The effect of the void fraction of the gas bubble swarm on the total drag coefficient was examined by the use of a void function. Most of the void functions for the relatively contaminated gas bubble swarms were between the values of potential flow and that of solid spheres.
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