The Research On Modeling Method And Approximation System Of Blade

This thesis study the space surface model and approximation system of the blade of steam turbine . First, this paper construct the mathematical model of blade according to the original data point of blade surface with 23 degree NURBS (Non- Uniform-Rational B-Spline) surface. Secondly, analysed the approach model, described circular arc approximation method, approaching blade curved surface with this method and realized raise of the approach speed. Huang Jing (Mechanics)Directed by Prof. Han Qingyao...