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Dynamics of a rising bubble in a polymer solution

Abstract : The dynamics of millimeter sized air bubbles rising through a still 1\% polyacrylamide/water solution are investigated using precise ultrasound velocity measurements combined with high speed video. The oscillatory path dynamics are compared to the those of bubbles rising in water. We find distinctive changes in path geometry, the onset of path instability, as well as lift forces. Since the Deborah number for these dynamics is near unity, the observed effects are attributed to viscoelastic effects on the wake of the bubble.
Keywords : Bubles Polymers Wake
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Contributor : Jean-François Pinton Connect in order to contact the contributor
Submitted on : Thursday, March 13, 2008 - 8:53:03 AM
Last modification on : Monday, December 16, 2019 - 4:02:14 PM
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Woodrow L. Shew, Jean-François Pinton. Dynamics of a rising bubble in a polymer solution. Journal of Statistical Mechanics: Theory and Experiment, IOP Publishing, 2006, pp.1-15. ⟨10.1088/1742-5468/2006/01/P01009⟩. ⟨ensl-00263687⟩



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