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Mostrando ítems 1-10 de 16
Artículo
Generation of small mono-disperse bubbles in axisymmetric T-junction: The role of swirl
(American Institute of Physics Inc., 2011)
The dynamics of micro-bubble formation in an axisymmetric T-junction for a gas-liquid system is analyzed. The approach adopted involves the creation of a tapering gas-liquid meniscus from which a steady gas ligament ...
Artículo
Numerical simulation of electrospray in the cone-jet mode
(American Physical Society, 2012)
We present a robust and computationally efficient numerical scheme for simulating steady electrohydrodynamic atomization processes (electrospray). The main simplification assumed in this scheme is that all the free ...
Artículo
Vortex breakdown in a water-spout flow
(AIP Publishing, 2013)
The numerical study of the steady axisymmetric air-water flow in a vertical sealed cylinder, driven by the rotating top disk, describes topological transformations as the rotation intensifies. The air meridional flow (AMF) ...
Artículo
The onset of electrospray: the universal scaling laws of the first ejection
(Nature Publishing Group, 2016)
The disintegration of liquid drops with low electrical conductivity and subject to an electric field is investigated both theoretically and experimentally. This disintegration takes place through the development of a ...
Artículo
Electrokinetic effects in the breakup of electrified jets: A Volume-Of-Fluid numerical study
(Elsevier, 2015)
The breakup of a charged liquid column is studied numerically using Volume-OF-Fluid (VOF) for a range of timescales where electrokinetic phenomena may become significant, i.e when the time to breakup becomes comparable ...
Artículo
The role of charge relaxation in electrified tip streaming
(AIP Publishing, 2023-01-24)
We study experimentally and numerically the onset of tip streaming in an electrified droplet. The experiments show that, for a sufficiently small dimensionless conductivity, the droplet apex oscillates before ejecting a ...
Artículo
Effects of geometry in the operation of coaxial electrosprays
(Elsevier, 2023-01)
Coaxial electrospray is a well established procedure to generate coaxial micro- and nano-structures (microcapsules and coaxial fibers). In this work we show the capabilities of a high-precision numerical code using dynamic ...
Artículo
Electrokinetic modelling of cone-jet electrosprays
(Cambridge University Express, 2023)
The physics of electrospray has been subject to an intense debate for three decades regarding the ultimate electrokinetics that determines the electric current and the size of the emitted droplets in the steady Taylor ...
Artículo
Linear stability analysis of axisymmetric perturbations in imperfectly conducting liquid jets
(American Institute of Physics, 2005)
A discussion is presented on the role of limited conductivity and permittivity on the behavior of electrified jets. Under certain conditions, significant departures with respect to the perfect-conductor limit are to be ...