The properties of large bubbles rising in very viscous liquids in vertical columns

Azzopardi, Barry J. and Pioli, L. and Abdulkareem, L.A. (2014) The properties of large bubbles rising in very viscous liquids in vertical columns. International Journal of Multiphase Flow, 67 . pp. 160-173. ISSN 0301-9322

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Abstract

Very viscous liquids (>100 Pa s) are found in form of heavy oils and polymers in industry as well as in the natural environment (silicatic magma). Little is known of their behaviour as gas bubbles up through them in vertical columns. Using advanced tomographic instrumentation, the characteristics of these flows have been quantified. It was found that: the gas mainly travels as very large bubbles which occupy a significant part of the column cross-section and that very small bubbles (~100 lm) are created and trapped within the liquid. There is a periodic rising and falling of the top surface of the gas/liquid column as the large bubbles rise to the top and burst.

Item Type: Article
Keywords: Slug; Bubble column; Gas/liquid; Viscous
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: https://doi.org/10.1016/j.ijmultiphaseflow.2014.08.013
Depositing User: Eprints, Support
Date Deposited: 12 Aug 2016 08:44
Last Modified: 03 Dec 2016 00:10
URI: http://eprints.nottingham.ac.uk/id/eprint/35555

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