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Aerodynamic Characteristics of Airfoils with Backward-Facing Step Configurations
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Abstract
A computational study of flow developments over airfoils with backward-facing steps is conducted to explore the possibility of enhancing aerodynamic performance of the airfoils by vortex generation. The study focuses on the effects of the separated flow and subsequent vortex formation generated by the step on pressure distributions around two airfoil profiles. Step location and size are varied to determine their effect on lift, drag, and L/D ratio. A discussion of the effects and trends of the various step configurations on airfoil performance is presented along with the results that may serve as a reference for employing a control criteria to optimize airfoil geometries during flight.
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Citation
Witherspoon, S. and Finaish, F., "Aerodynamic Characteristics of Airfoils with Backward-Facing Step Configurations," SAE Technical Paper 961297, 1996, https://doi.org/10.4271/961297.Also In
References
- Gad-el-Hak, Mohamed “Control of Low-Speed Airfoil Aerodynamics” AIAA Journal 28 9 1537 1552 September 1990
- Dulikravich, George S. “Aerodynamic Shape Design and Optimization: Status and Trends” Journal of Aircraft 29 6 1020 1026 Nov.-Dec. 1992
- Austin, Fred Rossi, Michael J. Nostrand, William Van Knowles, Gareth Jameson, Antony “Static Shape Control for Adaptive Wings” AIAA Journal 32 9 1895 1901 September 1994
- Rao, Dhanvada M. Campbell, James F. “Vortical Flow Management Techniques” Progress in Aerospace Sciences 24 173 224 1987
- Thangam, S. Hur, N. “A Highly-Resolved Numerical Study of Turbulent Separated Flow Past a Backward-Facing Step” International Journal of Engineering Science 29 5 607 615 1991
- Thangam, S. Speziale, C. G. “Turbulent Flow Past a Backward-Facing Step: A Critical Evaluation of Two-Equation Models” AIAA Journal 30 5 1314 1320 May 1992
- Kim, J. Kline, S. J. Johnston, J. P. “Investigation of a Reattaching Turbulent Shear Layer: Flow over a Backward-Facing Step” Journal of Fluids Engineering 102 302 308 September 1980
- Fertis, Demeter G. “New Airfoil Design Concept with Improved Aerodynamic Characteristics” Journal of Aerospace Engineering 7 3 328 339 July 1994
- Kline, Richard The Ultimate Paper Airplane Simon and Schuster New York, NY 1985
- Abbot, Ira H. Von Doenhoff, Albert E. Theory of Wing Sections Including a Summary of Airfoil Data Dover Publications, Inc. New York 1959
- Witherspoon, Stephen Finaish, Fathi “Experimental and Computational Studies of Flow Developments Around Airfoils with Backward-Facing Steps” 14th AIAA Applied Aerodynamics conference New Orleans, LA June 17-20 1996