TY - JOUR
T1 - Bubble size distributions for dispersed air - Water flows in a 100 mm horizontal pipeline
AU - Sanders, R. Sean
AU - Razzaque, M. Mahbubur
AU - Schaan, Jason
AU - Nandakumar, K.
AU - Masliyah, Jacob H.
AU - Afacan, Artin
AU - Liu, Shijie
PY - 2004/8
Y1 - 2004/8
N2 - The bubble size distributions of air dispersed in water flowing in a 100 mm horizontal pipeline were studied. Size distributions were obtained with a high-speed digital camera at axial positions 0.5, 15.3 and 42.3 m from the air injection point. Air was injected into the pipeline through a narrow tube extending into the pipe, perpendicular to the pipe axis. The effects of average water velocity, air concentration, and injection nozzle diameter on the evolution of bubble size distribution with axial pipe position were studied. For the lowest air concentration of 0.07%, equilibrium bubble size distributions were dependent only on water velocity. Nozzle injection diameter did not affect the downstream bubble size distributions at air concentrations of 0.07% and 0.3%. Levich's break-up theory was found to over-predict the experimental d max for each test condition.
AB - The bubble size distributions of air dispersed in water flowing in a 100 mm horizontal pipeline were studied. Size distributions were obtained with a high-speed digital camera at axial positions 0.5, 15.3 and 42.3 m from the air injection point. Air was injected into the pipeline through a narrow tube extending into the pipe, perpendicular to the pipe axis. The effects of average water velocity, air concentration, and injection nozzle diameter on the evolution of bubble size distribution with axial pipe position were studied. For the lowest air concentration of 0.07%, equilibrium bubble size distributions were dependent only on water velocity. Nozzle injection diameter did not affect the downstream bubble size distributions at air concentrations of 0.07% and 0.3%. Levich's break-up theory was found to over-predict the experimental d max for each test condition.
KW - Air-water pipe flows
KW - Dispersed bubble flow regime
UR - http://www.scopus.com/inward/record.url?scp=11844281518&partnerID=8YFLogxK
U2 - 10.1002/cjce.5450820428
DO - 10.1002/cjce.5450820428
M3 - 文章
AN - SCOPUS:11844281518
SN - 0008-4034
VL - 82
SP - 858
EP - 864
JO - Canadian Journal of Chemical Engineering
JF - Canadian Journal of Chemical Engineering
IS - 4
ER -