Title:
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Droplet collisions after liquid jet breakup in microgravity conditions
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Author:
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Suñol Galofre, Francesc Xavier; González Cinca, Ricardo
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Física Aplicada; Universitat Politècnica de Catalunya. NOLIN - Física No-Lineal i Sistemes Fora de l'Equilibri |
Abstract:
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The droplet dynamics and collisions after a liquid jet breakup have been
experimentally studied in low gravity conditions. An experimental setup was designed in order to
be used at the I.N.T.A. Drop Tower, which allows for 2.1 seconds of microgravity. The dynamics
of distilled water jets injected into a rectangular tank was recorded by means of a high-speed
video camera. Observations of the droplet trajectories showed a conical shape of the liquid jet
caused by droplet collisions just after detachment from the liquid jet. The detached droplets
initially follow straight paths at constant velocity in the direction of injection. Deviation of these
trajectories is a consequence of the collision between two droplets with an impact parameter
slightly different from zero. The collision between two droplets can give rise to coalescence or
bouncing between droplets depending on the droplet velocity difference and impact parameter.
At low values of the relative velocity, the collision leads to coalescence between droplets, while
at higher values the collision results in bouncing between droplets. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Física -Drops--Effect of reduced gravity on -Reduced gravity environments -Ambients de microgravetat |
Rights:
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Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Document type:
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Article - Published version Article |
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