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Continued self-similar breakup of drops in viscous continuous phase in agitated vessels

Patil, Pramod D and Kumar, Sanjeev (2011) Continued self-similar breakup of drops in viscous continuous phase in agitated vessels. In: Chemical Engineering Science, 66 (20). pp. 4932-4935.

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Official URL: http://dx.doi.org/10.1016/j.ces.2011.06.028


Drop breakup inviscous liquids in agitated vessels occurs in elongational flow around impeller blade edges. The drop size distributions measured over extended periods for impellers of different sizes show that breakup process continues up to 15-20 h, before a steady state is reached. The size distributions evolve in a self-similar way till the steady state is reached. The scaled size distributions vary with impeller size and impeller speed, in contrast with the near universal scaling known for drop breakup in turbulent flows. The steady state size of the largest drop follows inverse scaling with impeller tip velocity. The breadth of the scaled size distributions also shows a monotonic relationship with impeller tip velocity only. (C) 2011 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Publication: Chemical Engineering Science
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Drop;Population balance;Multiphase reactors;Extraction; Dispersion;Drop breakage
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 16 Sep 2011 06:57
Last Modified: 16 Sep 2011 06:57
URI: http://eprints.iisc.ac.in/id/eprint/40395

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