5 papers
Expansion of a hole in a viscoelastic liquid sheet
Tachin Ruangkriengsin, Rodolfo Brandão, Howard A. Stone
Experiments on highly viscous polymeric films show that punctured holes expand exponentially in time, without sustained accumulation of liquid near the rim. This response departs f…
Retraction Dynamics of a Highly Viscous Liquid Sheet
Taosif Ahsan, Rodolfo Brandão, Benny Davidovitch +1
We study the one-dimensional capillary-driven retraction of a finite, planar liquid sheet in the asymptotic regime where both the Ohnesorge number and the initial len…
Transient rod-climbing in an Oldroyd-B fluid
Tachin Ruangkriengsin, Rodolfo Brandão, Katie Wu +3
The Weissenberg effect, or rod-climbing phenomenon, occurs in non-Newtonian fluids where the fluid interface ascends along a rotating rod. Despite its prominence, theoretical insig…
Equatorial blowup and polar caps in drop electrohydrodynamics
Gunnar G. Peng, Rodolfo Brandao, Ehud Yariv +1
We illuminate effects of surface-charge convection intrinsic to leaky-dielectric electrohydrodynamics by analyzing the symmetric steady state of a circular drop in an external fiel…
Phoretic swimming with bulk absorption
Rodolfo Brandão, David Saintillan, Ehud Yariv
We consider phoretic self-propulsion of a chemically active colloid where solute is consumed at both the colloid boundary and within the bulk solution. Assuming first-order kinetic…