Abstract:

A parametric method for the axial compressor 2D blade profiles is proposed. The method uses parameters commonly used to define the blade profile geometries. This ensures the parametric method has clear geometrical meaning and can prevent generating unreasonable blade profile. Several illustrations are presented to show the fitting precision of the parametric method. A novel response surface model is proposed. The model regards the objective distribution function in the vicinity of a sample, being able to be represented by normal school, and then the response surface function in whole design space can be generated by linear combination of distribution functions of all samples. Based on the proposed response surface model, a numerical aerodynamic optimization platform for the axial compressor 2D blade profiles is developed. Aerodynamic optimizations of two compressor blade profiles are presented using the developed platform.

Key words: CFD, optimization, response surface model, parametric method, compressor