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    Aerodynamic Shape Optimization of Airfoils in Unsteady Flow

    Anant Diwakar1, D. N.Srinath1, Sanjay Mittal1

    CMES-Computer Modeling in Engineering & Sciences, Vol.69, No.1, pp. 61-90, 2010, DOI:10.3970/cmes.2010.069.061

    Abstract Aerodynamic shape optimization of airfoils is carried out for two values of Reynolds numbers: 103 and 104, for an angle of attack of 5o. The objective functions used are (a) maximization of lift (b) minimization of drag and (c) minimization of drag to lift ratio. The surface of the airfoil is parametrized by a 4th order non-uniform rational B-Spline (NURBS) curve with 61 control points. Unlike the efforts in the past, the relatively large number of control points used in this study offer a rich design shape with the possibility of local bumps and valleys on the airfoil surface. The… More >

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