Efficiency Optimization of an Annular-Nozzle Air Ejector under the Influence of Structural and Operating Parameters

The efficiency of annular-nozzle ejectors serving as components complex technical systems interacting with high-temperature media in engines and the field energy technologies is not linearly related to gas-dynamic characteristics flows formed device. In this paper, we have analyzed results numerical experimental studies gas jets an air ejector. regression equations built according circumscribed central composite design described relationship between a pressure drop structural parameters nozzle speed mass flow rates airflows, including error no more than 15 percent. A two-factor optimization based on Harington’s generalized desirability function was performed obtain relatively accurate estimate ejector under influence operating parameters. An method combination response surface methodology approach, allowing simultaneous consideration all responses, made it possible simultaneously optimize multiple conflicting objectives.