Optimization design of centrifugal compressor blades, based on the uniform design method and genetic algorithm

An approach to optimization design, of centrifugal compressor blades, which incorporates the uniform design method, CFD analysis technique, regression analysis method and genetic algorithm, is being presented. Uniform design is used to generate geometric information of trial samples, the performance of which are evaluated and analyzed by CFD technique. Function approximation of sample information is performed by the regression analysis method. Finally global optimization of the approximative functions is obtained by applying genetic algorithm. Taking maximal isentropic efficiency as the object function, this optimization method has been applied to the optimal design of a certain centrifugal compressor blade. Results show that the isentropic efficiency of the bladed wheel got improved, as compared with that of the original, which vindicates the effectiveness of the proposed optimization approach.