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Collision-induced dispersion of agglomerate suspensions in a shear flow

✍ Scribed by Olivier Seyvet; Patrick Navard

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
174 KB
Volume
78
Category
Article
ISSN
0021-8995

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✦ Synopsis

Agglomerates suspended in a polymer fluid have been known to disperse in a flow through two mechanisms-rupture and erosion. Using silica agglomerates, it is shown here that a third mechanism can occur, i.e., detachment of fragments due to agglomerate collision. This mechanism requires a much lower overall stress than erosion (and rupture, which occurs at even larger stresses than erosion). The fragment concentration produced by collision at a given time is proportional to the square of the applied shear rate.

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