OPENFOAM VALIDATION CASES
Ahmed body
Hereafter, we compute the flow about the classical Ahmed body [1]. In this case, we compare the numerical results obtained with OpenFOAM, against the experimental results obtained in references [2, 3]. The simulations were conducted for a slant angle of 25 degrees and a velocity of 40 m/s.
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| Experimental value | OpenFOAM value | Percent Difference (%) | |
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| \( c_d \) | 0.305 | 0.2986 | 2.09 |
warning The experimental values were extracted from plots illustrated in references [2,3].
We can not guarantee the accuracy or precision of this information.
Note 1: the meshes were generated using a third-party application.
Note 2: the results were obtained using the k-omega 2006 turbulence model.
References:
[1] Some Salient Features of the Time-Averaged Ground Vehicle Wake, SAE-Paper 840300, 1984.
[2] Aerodynamic Performance of Vehicles in Platoons: The Influence of Backlight Angles. SAE Technical Paper 2007-01-1547, 2007.
[3] On the Aerodynamic Performance of Automotive Vehicle Platoons Featuring Pre and Post-Critical Leading Forms. R. Pagliarella, PhD Thesis. RMIT University.
Download here the case files - OpenFOAM 9.
Download here the case presentation slides.
