Motion and the Oscillation of Interphase Meniscus Inside an Orifice during bubble Formation

0372555 - ÚCHP 2012 NL eng C - Conference Paper (international conference)
Stanovský, Petr - Růžička, Marek
Motion and the Oscillation of Interphase Meniscus Inside an Orifice during bubble Formation.
Conference Book. Vol. 35D. Groningen: European Physical Society, 2011 - (Colluza, I.; Blaak, R.; Capone, B.; Jungblut, S.), 113 /P7.113/ ISBN 2-914771-71-1.
[Liquid Matter Conference /8./. Wien (AT), 06.09.2011-10.09.2011]
R&D Projects: GA ČR GA104/07/1110; GA AV ČR KJB200720901
Institutional research plan: CEZ:AV0Z40720504
Keywords : meniscus * bubble formation * oscillatory motion
Subject RIV: CI - Industrial Chemistry, Chemical Engineering

The meniscus motion inside the orifice can be modeled as a damped pendulum which eligibility is clearly shown on the experimentally measured oscillations of the meniscus position inside orifice by high speed camera. The influence of operational parameters (as the chamber volume under plate with the orifice, liquid viscosity, liquid height and orifice length) will be highlighted in a present study. The increase of the chamber volume results in the emergence of zones with multiple states for the bubble size. This corresponds to the multiple states of bubbling period. The increase of the liquid viscosity, a liquid height and an orifice length is more complex. The surface properties of the orifice and the ratio of the orifice diameter to the capillary length have to be considered in explanation of observed behaviors..
Permanent Link: http://hdl.handle.net/11104/0205848