2026-04-17T22:16:48Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1427832025-12-04T20:44:14Zcom_2072_1057col_2072_478822col_2072_478917

Bubble dynamics in turbulent duct flows: lattice-boltzmann simulations and drop tower experiments Bitlloch Puigvert, Pau Ruiz, Xavier Ramírez Piscina, Laureano Casademunt i Viader, Jaume Ambients de microgravetat Física de partícules Reduced gravity environments Particle physics 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. 2019-10-22T13:13:12Z 2019-10-22T13:13:12Z 2018-08-01 2019-10-22T13:13:12Z info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion 0938-0108 https://hdl.handle.net/2445/142783 692033 eng Versió postprint del document publicat a: https://doi.org/10.1007/s12217-018-9634-5 Microgravity Science and Technology, 2018, vol. 30, num. 4, p. 525-534 https://doi.org/10.1007/s12217-018-9634-5 (c) Springer Verlag, 2018 info:eu-repo/semantics/openAccess 10 p. application/pdf Springer Verlag Articles publicats en revistes (Física de la Matèria Condensada)