Theoretical and experimental study of the onset of liquid entrainment during dual discharge from large reservoirs

Abstract

The phenomenon of liquid entrainment is investigated experimentally and theoretically for the condition of simultaneous discharge from two small orifices located on the side of a high-pressure reservoir containing stratified layers of two immiscible fluids. The measured critical height for air-water layers is found to be a function of the two discharge rates and the vertical distance separating the centrelines of the orifices. An independent theoretical analysis is conducted which gives good agreement with the experimental data.