A Parametric Geometry Representation Method for Blades' Profiles Design

Abstract

The geometric design of blades' profiles is a fundamental issue in turbo machinery industry. A parametric geometry representation method for blades' profiles design is presented. Unlike traditional method, this method generates profiles from the view of controlling the variation angle of camber line from leading edge to trailing edge along chord line direction, which can connect the profiles' geometric design parameters with flow passage trend closely. A leading trailing edge design method is also presented. It can maintain continuous curvature at the junction point between leading trailing edge with main blade. Ultimately, a blade modeling system has been developed based on this method and a detailed example is given.