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.
Experimental and Computational Investigation of Ahmed Body for Ground Vehicle Aerodynamics
Sae Technical Papers
International Truck & Bus Meeting & Exhibition ; 2001
2001-11-12
Aufsatz (Konferenz)
Englisch
Experimental and computational investigation of Ahmed body for ground vehicle aerodynamics
Kraftfahrwesen | 2001
|Experimental investigation of the unsteady wake of an ahmed body
Tema Archiv | 2010
|The Ahmed model unsteady wake: experimental and computational analysis
Kraftfahrwesen | 2003
|The Ahmed Model Unsteady Wake: Experimental and Computational Analyses
SAE Technical Papers | 2003
|The Ahmed model unsteady wake: experimental and computational analyses
Tema Archiv | 2003
|