Smooth Curvature of Airfoils Meanline for a General Turbomachinery Geometry Generator | ||
| International Conference on Aerospace Sciences and Aviation Technology | ||
| Article 73, Volume 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, May 2015, Pages 1-31 PDF (2.94 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/asat.2015.23012 | ||
| Authors | ||
| Ahmed F. Nemnem1; Mark G. Turner2 | ||
| 1Aircraft and Aerospace Department, Military Technical College, Cairo, Egypt. | ||
| 2School of Aerospace Systems, University of Cincinnati, Cincinnati, Ohio. | ||
| Abstract | ||
| The blade geometry design process is integral to the development and advancement of compressors and turbines in gas turbines or aeroengines. An airfoil section design feature has been added to a previously developed open source parametric 3D blade design tool. The second derivative of the mean-line (related to the curvature) is controlled using B-splines to create the airfoils. This is analytically integrated twice to obtain the mean-line. A smooth thickness distribution is then added to the airfoil with two options either the Wennerstrom distribution or a quartic B-spline thickness distribution. B-splines have also been implemented to achieve customized airfoil leading and trailing edges. Geometry for a turbine, compressor, and transonic fan are presented along with a demonstration of the importance of airfoil smoothness. | ||
| Keywords | ||
| Meanline; Curvature; Geometry; Turbomachinery | ||
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