Lagisetty, JS and Das, PK and Kumar, R and Gandhi, KS (1986) Breakage of viscous and non-Newtonian drops in stirred dispersions. In: Chemical Engineering Science, 41 (1). pp. 65-72.
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Abstract
A model of breakage of drops in a stirred vessel has been proposed to account for the effect of rheology of the dispersed phase. The deformation of the drop is represented by a Voigt element. A realistic description of the role of interfacial tension is incorporated by treating it as a restoring force which passes through a maximum as the drop deforms and eventually reaching a zero value at the break point. It is considered that the drop will break when the strain of the drop has reached a value equal to its diameter. An expression for maximum stable drop diameter, dmax, is derived from the model and found to be applicable over a wide range of variables, as well as to data already existing in literature. The model could be naturally extended to predict observed values of dmax when the dispersed phase is a power law fluid or a Bingham plastic.
Item Type: | Journal Article |
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Publication: | Chemical Engineering Science |
Publisher: | Elsevier Science |
Additional Information: | Copyright of this article belongs to Elsevier Science. |
Department/Centre: | Division of Mechanical Sciences > Chemical Engineering |
Date Deposited: | 03 Sep 2009 09:39 |
Last Modified: | 19 Sep 2010 05:43 |
URI: | http://eprints.iisc.ac.in/id/eprint/22770 |
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