Numerical Simulation and Key Structural Parameter Optimization Design of Ejector
In response to the demand for high-altitude simulation test of engine,aerodynamic flow field analysis is conducted on the two-stage ejector,which is based on numerical simulation software and combined with the physical parameters of the fluid,total temperature and pressure at the inlet and outlet.By guiding the parameter optimization of the key structure of the ejector through simulation results,a good match between the aerodynamic flow field and the experimental condition is ultimately achieved.The results show that the booster capacity of ejector can be achieved by using multi-stage ejector.However,the inner diameter of the straight section of the mixing chamber of the primary ejector is too large,which leads to the surge flow or backflow of the secondary ejector.
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