@inproceedings{9e2edd922a7a4421a62745030fd6394f,
title = "An improved methodology for airfoil shape optimization using surrogate based design optimization",
abstract = "This paper describes a Surrogate Based Design Optimization (SBDO) technique for airfoil shape optimization. The airfoil shape is parameterized in terms of B-Splines whose control points are used as design variables. Constraints are imposed on Maximum Camber and Thickness-to-Chord ratio of the airfoil. Optimum Latin Hypercube sampling is used to evaluate max. Lift/Drag (L/D) ratio for candidate airfoils, using XFOIL, an open-source aerodynamic analysis program. Using Kriging, a surrogate surface is created to obtain an approximate value of L/D for any set of design variables. Efficient global optimization algorithm is used to arrive at the optimum shape of airfoil for maximizing L/D at a specific angle of attack. The methodology resulted in profiles with 20\% to 30\% higher L/D than two baseline airfoils viz., Wortmann FX74 mod and Selig 1210, with several orders of magnitude lesser calls to XFOIL, as compared to a previous study, using teaching-learning based optimization technique.",
author = "D. Rajaram and Pant, \{R. S.\}",
note = "Publisher Copyright: {\textcopyright} 2015 Taylor \& Francis Group, London.; 4th International Conference on Engineering Optimization, ENGOPT 2014 ; Conference date: 08-09-2014 Through 11-09-2014",
year = "2014",
month = jan,
day = "1",
doi = "10.1201/b17488-27",
language = "English",
series = "Engineering Optimization IV - Proceedings of the 4th International Conference on Engineering Optimization, ENGOPT 2014",
publisher = "CRC Press/Balkema",
pages = "149--152",
editor = "H.C. Rodrigues and Soares, \{C.M. Mota\} and J.M. Guedes and A.L. Ara{\'u}jo and J.O. Folgado and J. Herskovits and F. Moleiro and J.F.A. Madeira",
booktitle = "Engineering Optimization IV - Proceedings of the 4th International Conference on Engineering Optimization, ENGOPT 2014",
}