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Mechanical Engineering Commons

Open Access. Powered by Scholars. Published by Universities.®

2011

Aerospace Engineering

Airfoil

Articles 1 - 1 of 1

Full-Text Articles in Mechanical Engineering

Optimization Of A Low Reynolds Number 2-D Inflatable Airfoil Section, Todd A. Johansen Dec 2011

Optimization Of A Low Reynolds Number 2-D Inflatable Airfoil Section, Todd A. Johansen

All Graduate Theses and Dissertations

A stand-alone genetic algorithm (GA) and an surrogate-based optimization (SBO) combined with a GA were compared for accuracy and performance. Comparisons took place using the Ackley Function and Rastrigin's Function, two functions with multiple local maxima and minima that could cause problems for more traditional optimization methods, such as a gradient-based method. The GA and SBO with GA were applied to the functions through a fortran interface and it was found that the SBO could use the same number of function evaluations as the GA and achieve at least 5 orders of magnitude greater accuracy through the use of ...