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Title: Bubble dynamics in turbulent duct flows: lattice-boltzmann simulations and drop tower experiments
Author: Bitlloch Puigvert, Pau
Ruiz, Xavier
Ramírez Piscina, Laureano
Casademunt i Viader, Jaume
Keywords: Ambients de microgravetat
Física de partícules
Reduced gravity environments
Particle physics
Issue Date: 1-Aug-2018
Publisher: Springer Verlag
Abstract: Lattice-Boltzmann simulations of a turbulent duct flow have been carried out to obtain trajectories of passive tracers in the conditions of a series of microgravity experiments of turbulent bubble suspensions. The statistics of these passive tracers are compared to the corresponding measurements for single-bubble and bubble-pair statistics obtained from particle tracking techniques after the high-speed camera recordings from drop-towers experiments. In the conditions of the present experiments, comparisons indicate that experimental results on bubble velocity fluctuations are not consistent with simulations of passive tracers, which points in the direction of an active role of bubbles. The present analysis illustrates the utility of a recently introduced experimental setup to generate controlled turbulent bubble suspensions in microgravity.
Note: Versió postprint del document publicat a:
It is part of: Microgravity Science and Technology, 2018, vol. 30, num. 4, p. 525-534
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ISSN: 0938-0108
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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