A new model for the breakage frequency of drops in turbulent stirred dispersions

Nambiara, DKR and Dasa, TR and Gandhi, KS and Kumar, R (1992) A new model for the breakage frequency of drops in turbulent stirred dispersions. In: Chemical Engineering Science, 47 (12). 2989 -3002.

PDF A_NEW_MODEL_FOR_THE.pdf - Published Version Restricted to Registered users only Download (1MB) | Request a copy

Abstract

A model of drop breakage in turbulent stirred dispersions based on interaction of a drop with eddies of a length scale smaller than the drop diameter has been developed. It predicts that, unlike the equal breakage assumed by earlier models, a large drop reduces in size due to stripping of smaller segments off it through unequal breakage. It is only when the drop nears the value of the maximum stable drop diameter that it breaks into equal parts. This new model of drop breakage, coupled with the pattern of interaction of drops with eddies of different sizes existing in the vessel, has been used to evaluate not only the breakage frequency, but also the size distribution of the daughter droplets(which was hitherto assumed). The model has been incorporated in the population balance equation and the resulting cumulative size distributions compared with those availble in the literature.

Item Type:	Journal Article
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:	28 Jan 2011 06:01
Last Modified:	28 Jan 2011 06:01
URI:	http://eprints.iisc.ac.in/id/eprint/35071

Actions (login required)

View Item