Centrifugal impeller design method and system based on bicubic Bezier curved surface

The invention discloses a centrifugal impeller design method and system based on a bicubic Bezier curved surface. The whole three-dimensional blade modeling process is relatively simple; the disturbance quantity generated by the double quartic Bezier curved surface is applied to the middle arc surface of the blade; the spatial three-dimensional molded surface of the middle cambered surface of theblade keeps the smooth characteristic of the double quartic Bezier curved surface in the flow direction and the spanwise direction, and the method can achieve accurate control over the molded surfaceof the local area of the centrifugal impeller blade and is mainly reflected in that on one hand, secondary flow of the surface of the blade is restrained through local adjustment of the molded surfaceof the blade; on the other hand, the strength and deformation of the specific blade area of the centrifugal impeller can be effectively controlled, and the safety of the blades is improved. 发明公开了一种基于双四次Bezier曲面的离心叶轮设计方法及系统，整个三