Barry J. Azzopardi
The properties of large bubbles rising in very viscous liquids in vertical columns
Azzopardi, Barry J.; Pioli, L.; Abdulkareem, L.A.
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.
|Journal Article Type||Article|
|Publication Date||Dec 4, 2014|
|Journal||International Journal of Multiphase Flow|
|Peer Reviewed||Peer Reviewed|
|APA6 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, doi:10.1016/j.ijmultiphaseflow.2014.08.013|
|Keywords||Slug; Bubble column; Gas/liquid; Viscous|
|Copyright Statement||Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf|
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