Considering the manufacturing error and aerodynamic boundary multi-source uncertainty coupling

taking a centrifugal compressor impeller as the research object

the numerical calculation method

the Latin hypercube test design method

the surrogate model

and the Monte Carlo method were combined to analyze the correlation of geometric design variables and performance. The influences of impeller manufacturing error and speed fluctuation on compressor performance were quantified. An aerodynamic robust optimization design method for centrifugal compressor impeller was proposed for considering multi-dimensional diverse uncertain factors. Results showed that

under the coupling effect of manufacturing error and speed uncertainty

the fluctuation range of pressure ratio increased from 350% to 1414%. The aerodynamic robustness was enhanced after optimization

the mean value of pressure ratio and isentropic efficiency increased by 69% and 49%

respectively

and the standard deviation of pressure ratio and isentropic efficiency decreased by 154% and 184%

respectively.