Elongation and burst of axisymmetric viscoelastic droplets: a numerical study.
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 is. A dimple 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.
Beaucourt
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J
Laboratoire de Spectrométrie Physique, CNRS, Université Joseph Fourier (Grenoble I), Boîte Postale 87, Saint-Martin d'Hères, 38402 Cedex, France.
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Verdier
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