Multi-type ribs of turbine blade modeling method fitting bowed-twist wall

Considering the geometric features of ribs in a bowed-twist cooling passage, a modeling method based on equidistant was presented. It generated rib tools, which was a tablet trimmed by equidistant surfaces of walls in intracavity of blade and pressure slide or suction slide, and then conducted modeling of ribbed channels. Furthermore, the principle of the modeling method was deeply analyzed, and two algorithms were developed, one recognized surfaces of walls in intracavity of blade automatically, the other matched two surfaces. The main parameters were determined as well. Meanwhile, a means based on sketch to parameterize ribbed channels was provided. Eventually, the parametric design module of ribbed channels was developed on unigraphics (UG), which achieved multiple ribbed channels modeling.