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Artículo
Self-similarity in the breakup of very dilute viscoelastic solutions
(Cambridge, 2020)
When pushed out of a syringe, polymer solutions form droplets attached by long and slender cylindrical filaments whose diameter decreases exponentially with time before eventually breaking. In the last stages of this ...
Artículo
Artículo
Global stability analysis of flexible channel flow with a hyperelastic wall
(Cambridge University Press, 2022-03)
We consider the stability of flux-driven flow through a long planar rigid channel, where a segment of one wall is replaced by a pre-tensioned hyperelastic (neo-Hookean) solid of finite thickness and subject to a uniform ...
Artículo
Regular and complex singularities of the generalized thin film equation in two dimensions
(Cambridge University Press, 2021)
We use a generalized version of the equation of motion for a thin film of liquid on a solid, horizontal substrate as a model system to study the formation of singularities in space dimensions greater than one. Varying ...
Artículo
The relationship between viscoelasticity and elasticity
(The Royal Society Publishing, 2020)
Soft materials that are subjected to large deformations exhibit an extremely rich phenomenology, with properties lying in between those of simple fluids and those of elastic solids. In the continuum description of these ...
Artículo
Infuence of the surface viscous stress on the pinch‑of of free surfaces loaded with nearly‑inviscid surfactants
(Nature Research, 2020-09)
We analyze the breakup of a pendant water droplet loaded with SDS. The free surface minimum radius measured in the experiments is compared with that obtained from a numerical solution of the Navier–Stokes equations for ...
Artículo
Stability and tip streaming of a surfactant-loaded drop in an extensional flow. Influence of surface viscosity
(Cambridge University Press, 2022-03)
We study numerically the nonlinear stationary states of a droplet covered with an insoluble surfactant in a uniaxial extensional flow. We calculate both the eigenfunctions to reveal the instability mechanism and the ...