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11 papers · 2 filters
Capillary-driven flow induced by a stepped perturbation atop a viscous film
Thomas Salez, Joshua D. McGraw, Oliver Bäumchen +2
Thin viscous liquid films driven by capillarity are well described in the lubrication theory through the thin film equation. In this article, we present an analytical solution of t…
Numerical solutions of thin film equations for polymer flows
Thomas Salez, Joshua D. McGraw, Sara L. Cormier +3
We report on the numerical implementation of thin film equations that describe the capillary-driven evolution of viscous films, in two-dimensional configurations. After recalling t…
Beyond Tanner's Law: Crossover between Spreading Regimes of a Viscous Droplet on an Identical Film
Sara L. Cormier, Joshua D. McGraw, Thomas Salez +2
We present results on the leveling of polymer microdroplets on thin films prepared from the same material. In particular, we explore the crossover from a droplet spreading on an in…
Elastocapillary self-folding: buckling, wrinkling and collapse of floating filaments
Arthur A. Evans, Saverio E. Spagnolie, Denis Bartolo +1
When a flexible filament is confined to a fluid interface, the balance between capillary attraction, bending resistance, and tension from an external source can lead to a self-buck…
Self-Similarity and Energy Dissipation in Stepped Polymer Films
Joshua D. McGraw, Thomas Salez, Oliver Bäumchen +2
The surface of a thin liquid film with nonconstant curvature is unstable, as the Laplace pressure drives a flow mediated by viscosity. We present the results of experiments on one…
Silo collapse under granular discharge
G. Gutiérrez, C. Colonnello, P. Boltenhagen +4
We investigate, at a laboratory scale, the collapse of cylindrical shells of radius and thickness induced by a granular discharge. We measure the critical filling height fo…