Oscillations of Bubbles Attached to a Capillary: Case of Pure Liquid

0392243 - ÚCHP 2014 RIV FR eng J - Článek v odborném periodiku
Vejražka, Jiří - Vobecká, Lucie - Tihon, Jaroslav
Oscillations of Bubbles Attached to a Capillary: Case of Pure Liquid.
EPJ Web of Conferences. - (Wang, A.). Roč. 45, č. 2013 (2013), 01092. ISSN 2100-014X.
[Experimental Fluid Mechanics 2012. Hradec Králové, 21.11.2012-23.11.2012]
Grant CEP: GA ČR GAP101/11/0806
Institucionální podpora: RVO:67985858
Klíčová slova: bubble oscillations * eigenmodes * damping rates
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství

An oscillating bubble attached to a tip of a capillary is used for probing interfacial properties of liquids containing surface-active agents. Nevertheless, available theories even for the case of pure liquid are not satisfactory. In this contribution, we therefore present results of a linear inviscid theory for shape oscillations of a spherical bubble, which is in contact with a solid support. The theory allows determining eigenmode oscillations, but also response of the bubble shape to a motion of its support or to volume variations. Present theory covers also the cases previously analyzed by Strani and Sabetta (J. Fluid Mech., 1984) and Bostwick and Steen (Phys. Fluids, 2009), and it can be applied to both bubbles and drops. The theory has been compared to experiments.
Trvalý link: http://hdl.handle.net/11104/0221973