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Collision-induced dispersion of agglomerate suspensions in a shear flow

Abstract : 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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Submitted on : Friday, November 19, 2010 - 4:33:06 PM
Last modification on : Wednesday, November 17, 2021 - 12:28:14 PM

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Olivier Seyvet, Patrick Navard. Collision-induced dispersion of agglomerate suspensions in a shear flow. Journal of Applied Polymer Science, Wiley, 2000, 78 (5), p.1130-1133. ⟨10.1002/1097-4628(20001031)78:5<1130::AID-APP220>3.0.CO;2-I⟩. ⟨hal-00537917⟩



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