Parametric Modeling and the Splitter Location Optimization of High Pressure Ratio Centrifugal Compressor
To determine the optimal positioning of the splitter,this study focuses on a transonic high-pressure ratio centrifugal impeller.The research utilizes a self-developed parametric design program for impellers with splitter,Computational Fluid Dynamics(CFD)simulations,Latin Hy-percube sampling,and multi-objective genetic algorithms for optimization.The optimization results indicate that for the impeller under investigation,the optimal position for the splitter involves a slight offset of the leading edge on the pressure side of the main blades,a nearly equal offset on the suction side of the main blades,a slight trailing edge offset towards the pressure side,and the occurrence of a slight sweep angle on the leading edge of the splitter.This design approach results in a 1.1％increase in design point efficiency and a 0.72％increase in pressure ratio.
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维普
