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Experimental and Computational Investigation of Ahmed Body for Ground Vehicle Aerodynamics
Technical Paper
2001-01-2742
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
External aerodynamics remains one of the major concerns in designing a new generation road vehicle. In the present study, the external aerodynamics of an Ahmed body at a scale and Reynolds number, that are representative of a car or light truck at highway speeds, is explored. An experimental model test was compared with a computational model using various back angles. In addition, the experiment allowed lift and drag to be measured at yaw angles up to ±15 degrees. Reynolds number effect on drag and lift coefficients was studied and wind averaged drag coefficients were calculated. The numerical calculations used a Reynolds-averaged, unsteady Navier-Stokes formulation. Both experimental and computational results are presented for back angles of 0-, 12.5-, and 25-degrees, then compared with each other and the data available in the literature.
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Citation
Bayraktar, I., Landman, D., and Baysal, O., "Experimental and Computational Investigation of Ahmed Body for Ground Vehicle Aerodynamics," SAE Technical Paper 2001-01-2742, 2001, https://doi.org/10.4271/2001-01-2742.Also In
References
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