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E. J. Vega
Researcher at University of Extremadura
Publications - 44
Citations - 740
E. J. Vega is an academic researcher from University of Extremadura. The author has contributed to research in topics: Free surface & Jet (fluid). The author has an hindex of 14, co-authored 39 publications receiving 585 citations.
Papers
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Journal ArticleDOI
Numerical simulation of electrospray in the cone-jet mode.
Miguel A. Herrada,Jose M. Lopez-Herrera,Alfonso M. Gañán-Calvo,E. J. Vega,José María Montanero,Stéphane Popinet +5 more
TL;DR: A comparison of the results with those calculated with a volume-of-fluid method showed that the numerical scheme presented here accurately describes the flow pattern within the entire liquid domain.
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Global and local instability of flow focusing: The influence of the geometry
TL;DR: In this article, the stability of both the tapering liquid meniscus and the emitted jet is analyzed experimentally, and three regimes are identified: (i) the steady jetting regime, where the liquid womeniscus is stable and the jet is convectively unstable; (ii) the local instability regime, which is the most stable regime; and (iii) the global instability regime (the most unstable regime).
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Influence of the surface viscosity on the breakup of a surfactant-laden drop
TL;DR: It is shown that surface viscosities play a critical role to explain the accumulation of surfactant in the satellite droplet and that surface tension variation was limited to solutocapillarity and Marangoni stresses.
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Measurement of relaxation times in extensional flow of weakly viscoelastic polymer solutions
TL;DR: A new setup was tested for filament breakup experiments using the slow retraction method, high-speed imaging techniques, and an immiscible oil bath to reduce solvent evaporation and facilitate particle tracking in the thinning filament.
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Generation of micro-sized PDMS particles by a flow focusing technique for biomicrofluidics applications
TL;DR: A technique based on a flow focusing technique is used to produce PDMS spherical particles with sizes of a few microns, showing an acceptable degree of monodispersity.