Study on the Structure and Performance of Steam-Ejector

A CFD software Fluent has been used to study the inner flow of Steam-Ejector by numerical simulation. To extend the numerical simulation applicability, the paper changes all the structure parameters and operate parameters of the steam-ejector into dimensionless. By calculating and analyzing the influence caused by the Steam-Ejector structure (include the nozzle poison, the second laryngeal diameter, the second laryngeal length, and the taper angle, the dilation angle), the paper get the optimal structure parameters. This paper analyzed the performance of the Steam-Ejector with the most optimized structure at different operating parameters (include the motive steam pressure, the motive steam temperature and the discharging fluid pressure). An experiment data has been quoted to test and verify the theory which gained by numerical simulation. The curve orderliness of the conclusion which gained by numerical simulation is accordant with that of the experiment data.