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

Azzopardi, Barry J.; Pioli, L.; Abdulkareem, L.A.

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.

Citation

Azzopardi, B. J., Pioli, L., & Abdulkareem, L. (2014). The properties of large bubbles rising in very viscous liquids in vertical columns. International Journal of Multiphase Flow, 67, https://doi.org/10.1016/j.ijmultiphaseflow.2014.08.013

• Journal Article Type: Article
• Acceptance Date: Aug 27, 2014
• Online Publication Date: Sep 19, 2014
• Publication Date: Dec 4, 2014
• Deposit Date: Aug 12, 2016
• Journal: International Journal of Multiphase Flow
• Print ISSN: 0301-9322
• Electronic ISSN: 0301-9322
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 67
• DOI: https://doi.org/10.1016/j.ijmultiphaseflow.2014.08.013
• Keywords: Slug; Bubble column; Gas/liquid; Viscous
• Public URL: https://nottingham-repository.worktribe.com/output/741553
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S030193221400161X