1D modelling of the liquid-gas jet pump performance

Abstract

The performance of a liquid-gas jet pump, which uses a high-velocity liquid flow to compress and entrain a gas flow, can be divided into two modes; on-design and off-design. The present paper investigates the mentioned modes of performance using a 1D model based on the conservation equations of mass, momentum and energy. Comparisons in terms of compression ratio and efficiency between the present model and experimental data show that the 1D model is capable of predicting the behavior of the liquid-gas jet pump for both modes. The effects of the primary flow velocity head, and areas of the mixing throat and diffuser on the performance of the jet pump are also investigated through a sensitivity study.