The Effect of Bubble Approach Velocity and Liquid Properties on Coalescence of Bubbles

0564228 - ÚCHP 2023 CA eng A - Abstrakt
Orvalho, Sandra - Stanovský, Petr - Zedníková, Mária - Růžička, Marek
The Effect of Bubble Approach Velocity and Liquid Properties on Coalescence of Bubbles.
Book of Abstracts. -: -, 2022. ISBN N.
[International Conference on Gas–Liquid and Gas–Liquid–Solid Reactor Engineering (GLS-15) /15./ Virtual. 07.10.2022-10.10.2022, Ottawa]
Grant CEP: GA ČR(CZ) GA19-09518S; GA ČR(CZ) GA22-29605S
Institucionální podpora: RVO:67985858
Klíčová slova: multiphase flow systems * coalescence of bubbles * experiments
Obor OECD: Chemical process engineering
https://aiche.confex.com/aiche/gls15/meetingapp.cgi/Paper/620012

The coalescence of bubbles and drops is a very important phenomenon in multiphase flow systems, which controls the bubble size distribution and the interfacial area available for heat and mass transfer in multiphase reactors. In the present communication, we will resume the results of our observations of the coalescence of bubbles, approaching at controlled velocity. Experiments were performed using high speed visualization of the life span of pairs of bubbles to investigate in detail how the coalescent efficiency, the bubble contact time and the transition concentration of a solute, depend on the liquid phase properties and on the velocity of approach between two bubbles. The study included the effect of viscosity, the presence of electrolytes and of surfactants.
Trvalý link: https://hdl.handle.net/11104/0335938