Title: Comprehensive Optimization on Aerodynamic and Aeroacoustic Performance of Airfoils
Abstract: Taking both the aerodynamic and aeroacoustic performance as the objectives of optimization,a multi-objective optimization method was proposed for low-speed airfoils by using Bezier curves to describe the airfoil geometry,applying the analysis method of iterative potential flow and boundary layer(IBL) flow to calculate the flow field,using the Brooks-Pope-Marcolini airfoil self-noise semi-empirical model to predict the aerodynamic noise and adopting Powell method to obtain the optimized airfoil.The multi-objective optimization method has been verified with a NACA0012 prototype airfoil in different weight assignment schemes.Results show that compared with the prototype airfoil,the optimized one has a higher lift-drag ratio,lower acoustic level and better aerodynamic and aeroacoustic performance under design conditions.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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