多相泵内气液两相混合增压过程的研究

he mathematic model of thermodynamic compression process for gas-liquid twin-phase mixture in multi-phrase pump was established, and the equations of thermodynamic process of adiabatic compression process and diathermanous compression process for gas-liquid twin-phase were deduced. The variational rule of state parameters for gas-liquid twin-phase mixture with different gas containing ratio was obtained. The influences of gas-liquid rate on compression processd and the variational rule of compression index were obtained. The moveable mesh model and VOF multi-phase liquid model were employed, and the numerical simulation of gas-liquid twin-phase compression process was carried out, then the presented mathematic model is confirmed. The study results will lay the thoeretical foundation for designs of gas-liquid multi-phrase pump.