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Open AccessArticle

Unsteady Lift Prediction with a Higher-Order Potential Flow Method

Mechanical Engineering, Bucknell University, 1 Dent Dr., Lewisburg, PA 17837, USA
Aerospace Engineering, The Pennsylvania State University, 229 Hammond Bldg, University Park, PA 16802, USA
Aerospace Engineering, Ryerson University, 350 Victoria St., Toronto, ON M5B 2K3, Canada
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;
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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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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