Entrainment Rate and Size of Entrained Droplets in Annular Two-Phase Flow
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The flowrate and size of entrained droplets were measured in upward annular flow of air and liquid. The rate of droplets entrained from the liquid film to the gas core was derived taking into account the rate of droplets transferred from the gas core onto the liquid film. The size distribution of the droplets in the gas core was approximated by a gamma distribution and empirical equations were proposed for the mean diameter of the droplets in terms of the conditions of gas flow and the surface tension.
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