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Passage of a bubble through a liquid–liquid interface
Author(s) -
Dietrich N.,
Poncin S.,
Pheulpin S.,
Li Huai Z.
Publication year - 2008
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.11399
Subject(s) - bubble , particle image velocimetry , body orifice , viscosity , silicone oil , materials science , phase (matter) , mechanics , newtonian fluid , non newtonian fluid , velocimetry , optics , chemistry , physics , composite material , mechanical engineering , engineering , organic chemistry , turbulence
The aim of this study is to investigate the bubble passage at a liquid–liquid interface using a high‐speed video camera (950 images per second) and a Particle Image Velocimetry (PIV) system. Experiments were conducted in a square Plexiglas column of 0.1 m. Bubbles were generated through a submerged orifice ( D = 1 × 10 −3 m). The Newtonian Emkarox (HV45) solution was employed for the heavy phase whereas two different organic liquids of different viscosity (Silicone oil 10 mPa s and 100 mPa s) were used as light phase. Experimental results show the effect of the bubble size and the viscosity of the light phase on the retention time, the length of the column of fluid entrained behind the bubble, the bubble velocity as well as the velocity fields at the liquid–liquid interface. © 2008 American Institute of Chemical Engineers AIChE J, 2008