Elongation and burst of axisymmetric viscoelastic droplets: a numerical studyReport as inadecuate




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1 LSP - Laboratoire de Spectrométrie Physique

Abstract : The dynamics of elongation and burst of an isolated viscoelastic drop are investigated numerically in the special case of a viscosity ratio lambda=1. We show that the burst threshold is not affected by viscoelasticity itself, whereas the stationary drop morphology does. A cusp at the tips of the drop can even be observed when elastic effects are large. The burst dynamics is very sensitive to the presence of viscoelasticity: at low elasticity burst is slowed down while for large elasticity levels it becomes even faster than the Newtonian situation.

Keywords : drop breakup viscoelasticity Oldroyd-B





Author: Julien Beaucourt - Thierry Biben - Claude Verdier -

Source: https://hal.archives-ouvertes.fr/



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