TY - JOUR
T1 - Prediction of the entrained liquid fraction in vertical annular gas-liquid two-phase flow
AU - Cioncolini, Andrea
AU - Thome, John R.
PY - 2010/4
Y1 - 2010/4
N2 - The study considers the prediction of the entrained liquid fraction in adiabatic gas-liquid annular two-phase flow in vertical pipes. Nine empirical correlations have been tested against an experimental data bank drawn together in this study containing 1504 points for 8 different gas-liquid combinations and 19 different tube diameters from 5.00 mm to 57.1 mm. The correlation of Sawant, Ishii and Mishima and the one of Oliemans, Pots and Trompé were found to best reproduce the available data. A new correlating approach, derived from both physical intuition and dimensional analysis and capable of providing further physical insight into the liquid film atomization process, was proposed and worked better than any of the existing methods. This new correlation is based on the core flow Weber number that is also a controlling dimensionless group in determining the wall shear stress and associated frictional pressure gradient of annular flows.
AB - The study considers the prediction of the entrained liquid fraction in adiabatic gas-liquid annular two-phase flow in vertical pipes. Nine empirical correlations have been tested against an experimental data bank drawn together in this study containing 1504 points for 8 different gas-liquid combinations and 19 different tube diameters from 5.00 mm to 57.1 mm. The correlation of Sawant, Ishii and Mishima and the one of Oliemans, Pots and Trompé were found to best reproduce the available data. A new correlating approach, derived from both physical intuition and dimensional analysis and capable of providing further physical insight into the liquid film atomization process, was proposed and worked better than any of the existing methods. This new correlation is based on the core flow Weber number that is also a controlling dimensionless group in determining the wall shear stress and associated frictional pressure gradient of annular flows.
KW - Annular two-phase flow
KW - Entrained liquid fraction
KW - Entrainment
KW - Liquid film atomization
UR - http://www.scopus.com/inward/record.url?scp=76049122093&partnerID=8YFLogxK
U2 - 10.1016/j.ijmultiphaseflow.2009.11.011
DO - 10.1016/j.ijmultiphaseflow.2009.11.011
M3 - 文章
AN - SCOPUS:76049122093
SN - 0301-9322
VL - 36
SP - 293
EP - 302
JO - International Journal of Multiphase Flow
JF - International Journal of Multiphase Flow
IS - 4
ER -