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Aerodynamic Development of an Experimental car
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1989 by SAE International in United States
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An experimental research car that runs at over 300 km/h has been developed by aerodynamic improvement. To achieve this target with 295PS, 2000cc engine, a coefficient of drag CD = 0.20 was required. The results of basic research and some fundamental aerodynamics are described. Particularly, a base-bleed system using engine cooling air has been investigated from the results of basic tests of a simple model. A new method to determine the curvature of the body-surface corner is proposed, on the basis of the prediction of a turbulent boundary layer separation for the front part of the body. The various processes of aerodynamic improvement in the wind tunnel are explained. It is suggested that this kind of approach is of indispensable process for developing an aerodynamically efficient vehicle.
CitationKohri, I., Kataoka, T., Imada, N., and Yamamoto, S., "Aerodynamic Development of an Experimental car," SAE Technical Paper 890373, 1989, https://doi.org/10.4271/890373.
- Hucho, W.H., et al., “The Optimization of Body Details”. SAE Paper 760185, 1976
- Fukumitsu, Y., et al., “Compatibility of Automobile Interior Space with Low-Aerodynamic Drag Body”. SAE Paper 852287, 1985
- Santer, R.M., et al., “The Aerodynamic Development of the ProbelV Advanced Concept Vehicle”, SAE Paper 831000, 1983
- Morel, T., “Theoretical Lower Limits of Forebody Drag”, Aeronautical Journal. Paper No.639, January 1979
- Stratford, B.S., “The Prediction of Separation of the Turbulent Boundary Layer”, Jour. of Fluid Mech. 5, 1958
- Paul, J.C., LaFond, J.G., “Analysis and Design of Automobile Forebodies Using Potential Theory and a Boundary layer Separation Criterion”, SAE Paper 830999, 1983
- Morel, T., “The Aerodynamic Drag of Bluff Body Shapes Characteristic of Hatch-Back Car”, SAE Paper 780267, 1978
- Bearman, P.W., “The Effect of Base Bleed on the Flow behind a Two Dimensional Model with Blunt Trailing Edge”, The Aeronautical Quarterly. Vol. 18, August 1967
- Morel, T., Discussion in ‘Drag-Reducing Techniques by W.A.Mayer’, N.Y. Plenum.Press, 1978
- Kohri, I. and Numata, N., “Effect of Rear End Configuration of Vehicles on Aerodynamic Drag”, JSAE Review, December 1985