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Artículo
Large impact velocities suppress the splashing of micron-sized droplets
(American Physical Society, 2021)
Here we investigate the transition from spreading to splashing of drops with radii R varying from millimeters to tens of microns impacting onto a smooth and dry partially wetting substrate at normal atmospheric conditions. ...
Artículo
On the jets produced by drops impacting a deep liquid pool and by bursting bubbles
(Cambridge University Press, 2021)
Here we provide a unified theoretical description of two different physical situations in which liquid jets are expelled out of the bulk of a liquid as a consequence of the capillary collapse of a void. We demonstrate ...
Artículo
The initial impact of drops cushioned by an air or vapour layer with applications to the dynamic Leidenfrost regime
(Cambridge University Press, 2022-06-25)
This work is devoted to the study of the conditions under which a drop directed normally towards a superheated or isothermal smooth substrate prevents the initial contact with the solid by skating over a micrometre-sized ...
Artículo
Theory of the jets ejected after the inertial collapse of cavities with applications to bubble bursting jets
(American Physical Society, 2023)
The dynamics of the axisymmetric jets originated from the bursting of bubbles in a liquid of density ρ, viscosity μ, and interfacial tension coefficient σ can be rationalized as a two-stage process in which, initially, the ...
Artículo
Spreading and splashing of drops impacting rough substrates
(Publisher Cambridge University Press, 2021)
Here, we present experimental results of water and ethanol drops of radii R, density ρ and interfacial tension coefficient σ, impacting with a velocity V over different types of sandpapers containing particles of ...
Artículo
The skating of drops impacting over gas or vapour layers
(Cambridge University Press, 2024-06)
We report numerical simulations confirming the predictions in Gordillo & Riboux (J. Fluid Mech., vol. 941, 2022, A10), where we elucidated the lubrication mechanism by which a drop of a low-viscosity liquid impacting over ...
Artículo
Direction of the microjet produced by the collapse of a cavitation bubble located in a corner of a wall and a free surface
(American Physical Society, 2021-08)
In this paper, we present a simplified theoretical model based on the method of images that predicts the direction of the microjet produced after the implosion of a cavitation bubble created in a corner of a free interface ...
Artículo
Impulsive generation of jets by flow focusing
(Cambridge University Press, 2020)
Here we characterize the origin and subsequent disintegration into droplets of the type of high-speed jets formed after the sudden implosion of a locally spherical cavity. The full spatio-temporal evolution of these types ...
Artículo
Role of liquid viscosity and of air entrapped on the splashing of drops impacting over superhydrophobic substrates
(American Physical Society, 2022-09)
Here we analyze the splash transition of drops of liquids with different viscosities impacting normally over different types of rough superhydrophobic substrates, finding that the velocity for the splash transition, V∗, ...
Artículo
Amplification of Supersonic Microjets by Resonant Inertial Cavitation-Bubble Pair
(American Physical Society, 2024-03)
We reveal for the first time by experiments that within a narrow parameter regime, two cavitation bubbles with identical energy generated in antiphase develop a supersonic jet. High-resolution numerical simulation shows a ...