Numerical simulation and analysis for three-dimensional flow field of air-ejector of liquid ring pump

By varying the structural parameter of ejector of liquid ring pump and simulating internal 3-D flow,the impact of structural parameter on internal flow field and performance of ejector is investigated with software package CFX and turbulence model,in which the impact of the injecting pressure,the throat-nozzle distance and the ratio of secondary area on performance of ejector is emphasized.And the varying regularity is obtained.That is the performance(air flow injected and ejecting coefficient and so on) of the ejector varies with the change of the throat-nozzle distance and the ratio of area.The result shows that the vary of geometric parameters impacts the wave structure significantly;There are a optimum area ratio and an ideal throat-nozzle distance available under given condition corresponding to max.ejecting coefficient,which provides reference for optimal design of ejector.