Abstract
Hydrodynamics and mass transfer of slug flow in horizontal capillaries with different inner diameter (0.92mm for hydrodynamics, 1.70mm, 1.86mm, and 2.53mm for mass transfer) in water–air and glycerol–air (water–air–solid and glycerol–air–solid for mass transfer) systems were studied. Experimental data of bubble velocity and pressure drop was compared with values calculated by mathematical model of slug flow in capillaries proposed earlier. A simple equation to calculate the gas bubble velocity was obtained. The intensification of mass transfer in slug flow regime at the expense of the Taylor circulation was demonstrated experimentally. Semi-empirical formula for Sherwood number in a wide range of capillary number was obtained.
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