Numerical simulation of flow inside an adjustable ejector.

A mathematical model of the adjustable ejector was established and the flow of the adjustable ejector was simulated by FLUENT on different spindle positions. The experimental results indicate that the axial pressure of an adjustable ejector increases linearly in the constant area mixing section, sharply in the beginning of diffuser section and then slowly in the other sections of diffuser. The velocity of flow in the mixing section differs significantly at the axis and boundary. The movement of spindle into the nozzle makes the position of shock wave upstream and motive flow rate decreases. [ABSTRACT FROM AUTHOR]