Collision of a Small Bubble with a Large Falling Particle

0427856 - ÚCHP 2015 RIV FR eng C - Conference Paper (international conference)
Vejražka, Jiří - Hubička, M. - Basařová, P.
Collision of a Small Bubble with a Large Falling Particle.
EPJ Web of Conferences. Vol. 67. Les Ulis: EDP SCIENCES, 2014, Č. 02125. ISBN 978-80-260-5375-0. ISSN 2100-014X.
[International Conference Experimental Fluid Mechanics 2013. Kutná Hora (CZ), 19.11.2013-22.11.2013]
R&D Projects: GA ČR GAP101/11/0806
Institutional support: RVO:67985858
Keywords : spherical bubble shape * experiments * plastic materials
OECD category: Chemical process engineering
http://www.epj-conferences.org/articles/epjconf/pdf/2014/04/epjconf_efm-13_02125.pdf

The motion of a tiny bubble (< 1mm) in a neighborhood of a solid sphere falling through a liquid is studied. A model assuming irrotational flow around the sphere and spherical bubble shape is provided; this model is validated by comparison with the experiment. The model can be further simplified by neglecting inertial forces, which are negligible in present experiments. Results of the model are provided also for the opposite limit, in which the inertial forces are dominating the bubble motion.
Permanent Link: http://hdl.handle.net/11104/0234071