angle of inclination on the rise velocity; CO2 bubble in a closed tube; aqueous solutions of glycerol
Abstract--The effect of angle of inclination on the rise velocity of a single gas slug and overall liquid-phase
mass transfer coefficient (KLA) have been measured for a CO2 bubble in a closed tube. Water and two
aqueous solutions of glycerol were used. The results on KLA and the rise velocity Ub0 have been empirically
correlated. A method has been proposed to estimate the interfacial area of the slug in an inclined position.
Plausible explanations have been offered for the observed jump in the KLA for larger tubes (D > 0.0257 m)
and longer (L/D > 3) slugs.