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http://dx.doi.org/10.14775/ksmpe.2019.18.10.110

Development of Blade Surface Modeling System Using Point Data  

Kim, Yeoung-Il (Steam Turbine Design Team, Doosan Heavy Industries & Construction)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.10, 2019 , pp. 110-115 More about this Journal
Abstract
Stationary and rotating blades can be found in a steam turbine generator and the airfoil shapes of these blades can be defined by point data from an aerodynamic design system. The main design process of blades is composed of two steps: first, the blade surface is modeled with the point data; and then, the section data is generated which contains composite curves with line segments and arcs for CAE of the blade. The surface is modeled by a curve-net defined by the point data, which may be extended to obtain the section data to model the blade. This paper presents methods for automating the above-mentioned steps, which have been implemented in the commercial CAD/CAM system, Unigraphics, with API functions written in C-language. Finally, the proposed methods have been applied to model the blade of a steam turbine generator.
Keywords
Blade; Surface Fitting; Surface Extension;
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