Effect of the Backlight Angle on the Aero-Acoustics of the C-Pillar


(*) Corresponding author


Authors' affiliations


DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)

Abstract


In this paper, the effect of the backlight angle on the aerodynamic and acoustic parameters of the Ahmed model is investigated using numerical methods. The numerical results are validated by the experimental results available in the literature. The comparison reveals good agreement between the simulations and experiments. After validation of the aerodynamic model, aerodynamic noise on the c-pillar is studied and aerodynamic noise sources are identified. The critical backlight angles considering the aerodynamic and acoustic parameters are obtained.
Copyright © 2013 Praise Worthy Prize - All rights reserved.

Keywords


Ahmed Bluff Body Model; Computational Fluid Dynamics; Aero-Acoustics

Full Text:

PDF


References


S. Ahmed, G. Ramm, and G. Faltin, Some Salient Features of the Time-Averaged Ground Vehicle Wake, SAE Technical Paper, 840300, February 1984.

E.Guilmineau, Computational Study of Flow Around a Simplified Car Body, Journal of Wind Engineering and Industrial Aerodynamics, Vol. 96(Issues 6–7):1207-1217, June–July 2008.

M. Minguez, R. Pasquetti, and E. Serre, High-Order Large Eddy Simulation of Flow Over the Ahmed Body Car Model, Physics of Fluids,Vol.20(Issue 9): 095101-095118, September 2008.

R. K. Strachan, K. Knowles and N. J. Lawson, The Vortex Structure Behind an Ahmed Reference Model in the Presence of a Moving Ground Plane, Experiments in Fluids, Vol.42(Issue 5): 659-669, May 2007.

T.H.Shih, W. W.Liou, A. Shabbir, Z. Yang, and J. Zhu, A New k-ε Eddy-Viscosity Model for High Reynolds Number Turbulent Flows - Model Development and Validation, Computers Fluids, Vol.24(Issue 3):227-238, March 1995.

I. Proudman, The Generation of Noise by Isotropic Turbulence, Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, Vol. 214(Issue 1116): 119-132, August 1952.

G. M. Lilley, The Radiated Noise from Isotropic Turbulence Revisited, DTIC Document, NASA Langley Research Center, Hampton, VA, USA, 1993.

S. Sarkar, and M. Y. Hussaini, Computation of the sound generated by isotropic turbulence, DTIC Document, NASA Langley Research Center, Hampton, VA, USA, 1993.

W.Rodi, DNS and LES of Some Engineering Flows, Fluid Dynamics Research, Vol.38 (Issues 2–3):145–173, February–March 2006.

J.L.Graysmith, A.J.Baxendale, J.P. Howell, and T. Haynes, Comparisons between CFD and experimental results for the Ahmed reference model, Vehicle aerodynamics Conference, Vol.30, pp. 1–11, Loughborough, UK, July 1994.


Refbacks

  • There are currently no refbacks.


Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize