Synergistic effects of vapor and gaseous cavitation and mass-transfer mechanism in a mechanical pump

Dynamic gas–liquid mass-transfer processes are extensively encountered in mixture transport systems, where mechanical pumps pressurize the and accompanied by flow instabilities. Herein, our proposed gaseous cavitation model was innovatively developed to revolutionize independent unidirectional absorbed or evolved mass transfers. Complex behaviors under synergetic effects of vapor cavitations were achieved for first time an on-orbit refueling pump. Four coupled processes, namely, evolution, evaporation, absorption, condensation, distribution, investigated through numerical calculations. The results indicated that when solution close critical saturation conversion direction, a surge rate, more intense hydrodynamic instability occurred. drove accumulation gas along edge impeller, evolved-dominated bands existed on suction surfaces long blade, exhibiting degassing characteristics cavity, other regions belonged absorption-dominated region. Continuous dissolution induced significant positive pressure gradient led maximum oxygen concentration at impeller outlet. maximal increments chamber, volute 98%, 447%, 694%, respectively, volume fractions attenuated 18.3%, 12.5%, 5.0%, respectively. Notably, increase fraction dominant reason exacerbating forces, range radial force tended be narrow concentrated as increased.