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A Numerical Study of High-Lift Single Element Airfoils with Ground Effect for Racing Cars
Technical Paper
2005-01-0607
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A numerical study is presented for high-lift airfoils suitable for racecar applications. The study includes the effect of ground clearance (distance between the airfoil and the ground), angle of attack and Reynolds number based on airfoil chord length. The finite volume code CFL3D, developed by NASA Langley Research Center, is used in the study. Four airfoils are used to represent different airfoil families. The study shows that Reynolds number has a very small effect on the downforce and the drag. Medium and large ground clearance are studied. For medium ground clearance the downforce and the drag increase, as airfoil gets closer to the ground. A considerable increase in the downforce can be gained by even small changes in the ground clearance. As the angle of attack increases both the drag and the downforce increase as expected. For large ground clearance the airfoil performance is close to the freestream case.
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Authors
Topic
Citation
Mokhtar, W., "A Numerical Study of High-Lift Single Element Airfoils with Ground Effect for Racing Cars," SAE Technical Paper 2005-01-0607, 2005, https://doi.org/10.4271/2005-01-0607.Also In
SAE 2005 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V114-6; Published: 2006-02-01
Number: V114-6; Published: 2006-02-01
References
- Ranzenbach, R. Barlow, J. “Cambered Airfoil in Ground Effect-Wind Tunnel and Road Conditions” AIAA no. 95–1909, AIAA Applied Aerodynamics Conference, 13 th San Diago, CA June 19–22 1995
- Katz, J “Race car aerodynamics, designing for speed” Robert Bentley Inc. Automotive publishers 1995
- Katz, J. “Aerodynamic Model for Wing-Generated Down Force on Open-Wheel-Racing-Car Configurations” SAE paper no. 860218 , SAE Trans 95 129 137 1986
- Jasinski, W Selig, M “Experimental Study of Open-Wheel Race-Car Front Wings” SAE paper no. 983042 , SAE Trans, J. Passenger Cars 1999
- Ranzenbach, R. Barlow, J. Diaz, R “Multi-element airfoil in ground effect - An Experimental and Computational Study” AIAA no. 1997–2238, AIAA Applied Aerodynamics Conference, 15 th Atlanta GA June 1997
- Ranzenbach, R. Barlow, J. “Two-Dimensional Airfoil in Ground Effect - An Experimental and Computational Study” SAE paper no. 942509 , Motorsports Engineering Conference proceedings 1 241 249 1994
- Rumsey, C Ying, S “Prediction of high lift: review of present CFD capability” Prog. Aero. Eng. 38 149 180 2002
- Liebeck, R. “Design of subsonic airfoils for high lift” J. Aircraft 15 9 547 561 1978
- Eppler, R. “Airfoil design and data” Springer-Verlag Berlin Heidelberg 1990
- Selig, M. Guglielmo, J. “High-lift low Reynolds number airfoil design” J. Aircraft 34 1 72 79 January–February 1997
- Abbott, Ira Doenhoff, Albert “Theory of wing sections” Dover Publication Inc. 1959
- Drela, M. Giles, M.B. “Viscous-Inviscid Analysis of Transonic and Low Reynolds Number Airfoils” AIAA J. 25 10 1347 1355 October 1987
- Drela, M. “Elements of Airfoil Design Methodology, Applied Computational Aerodynamics” AIAA Progress in Aeronautics and Astronautics 125 1990
- Mokhtar, W. “A Numerical Parametric Study of High-Lift Low Reynolds Number Airfoils” AIAA 43 rd Aerospace Science Meeting and Exhibit, AIAA paper no.2005-1355 Jan 2005
- Krist, S. Biedron, A. Rumsey, C. “CFL3D user’s manual (Version 5.0)” 1998
- Roe, P. “Approximate Riemann Solvers, Parameter Vectors, and DifferenceSchemes,” J. Computational Physics 43 1981
- Menter, F.R. “Zonal Two Equation k-w Turbulence Models for Aerodynamic Flows” AIAA Paper 93-2906 1993