Singular thin viscous sheet.
The evolution of a thin viscous layer is usually smooth. Here we conduct an experiment where the layer adopts a singular shape. Using the analogy between the flow of a viscous liquid and the deformation of an elastic solid, the theoretical analysis predicts a conical shape for the sheet and is in quantitative agreement with the experiment.
Boudaoud
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Laboratoire de Physique Statistique de l'ENS, CNRS, Universités Paris VI et Paris VII, 24 rue Lhomond, F-75231 Paris Cedex 05, France.
Chaïeb
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