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Open AccessArticle

Unsteady Lift Prediction with a Higher-Order Potential Flow Method

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Mechanical Engineering, Bucknell University, 1 Dent Dr., Lewisburg, PA 17837, USA
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Aerospace Engineering, The Pennsylvania State University, 229 Hammond Bldg, University Park, PA 16802, USA
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Aerospace Engineering, Ryerson University, 350 Victoria St., Toronto, ON M5B 2K3, Canada
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Mechanical and Aerospace Engineering, University of Central Florida, P.O. Box 162450, Orlando, FL 32816, USA
*
Author to whom correspondence should be addressed.
Aerospace 2020, 7(5), 60; https://doi.org/10.3390/aerospace7050060
Received: 24 April 2020 / Accepted: 18 May 2020 / Published: 21 May 2020
An unsteady formulation of the Kutta–Joukowski theorem has been used with a higher-order potential flow method for the prediction of three-dimensional unsteady lift. This study describes the implementation and verification of the approach in detail sufficient for reproduction by future developers. Verification was conducted using the classical responses to a two-dimensional airfoil entering a sharp-edged gust and a sinusoidal gust with errors of less than 1% for both. The method was then compared with the three-dimensional unsteady lift response of a wing as modeled in two unsteady vortex-lattice methods. Results showed agreement in peak lift coefficient prediction to within 1% and 7%, respectively, and mean agreement within 0.25% for the full response. View Full-Text
Keywords: unsteady aerodynamics; potential flow; applied aerodynamics unsteady aerodynamics; potential flow; applied aerodynamics
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MDPI and ACS Style

Cole, J.A.; Maughmer, M.D.; Bramesfeld, G.; Melville, M.; Kinzel, M. Unsteady Lift Prediction with a Higher-Order Potential Flow Method. Aerospace 2020, 7, 60.

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