Drag Reduction on the 35° Slant Angle Ahmed Reference Body Using Flaps

Peng Guo; Xing Jun Hu; Jun Yuan Zhang

doi:10.4028/www.scientific.net/AMM.668-669.156

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 668-669Drag Reduction on the 35° Slant Angle Ahmed...

Drag Reduction on the 35° Slant Angle Ahmed Reference Body Using Flaps

Abstract:

Based on computational fluid dynamics numerical simulation methods, this article studied the changes of resistance characteristics and tail pressure distribution on the 35° slant angle Ahmed model after installing the rear flaps. The results show that the appropriate size and reasonable arrangement of flaps can make the model tail separated airflow attach on the flap and the flap trailing edge separate again, narrow the tail separation zones, improve the model tail pressure, reduce the pressure difference on the forepart and rear model,lower the model resistance, then causing the drag reduction effect. The study found that the best drag reduction effect is to use 50 mm high flap, decorate in the rear bevel edge from Ahmed model 15 mm, the largest model resistance can be reduced by 5.37%.

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Periodical:

Applied Mechanics and Materials (Volumes 668-669)

Pages:

156-159

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.668-669.156

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Cite this paper

Online since:

October 2014

Authors:

Peng Guo*, Xing Jun Hu, Jun Yuan Zhang

Keywords:

Aerodynamics, Ahmed Model, Computational Fluid Dynamics, Drags Reduction, Flaps

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* - Corresponding Author

References

[1] W.H. Hucho. Aerodynamics of Road Vehicles, 4th ed., SAE, Warrendale, PA, (1998).

Google Scholar

[2] X. N. Wang, S.W. Li, L. Chen, Investigation on reducing drag of the bus-like body using tail clapboards, Journal of Experiments in Fluid Mechanics, 2011, 25(2): 58-62.

Google Scholar

[3] J. F. Beaudoin, J. L. Aider, Drag and lift reduction of a 3D bluff body using flaps, Experiments Fluid, 2008, 44: 491-501.

DOI: 10.1007/s00348-007-0392-1

Google Scholar

[4] H. F. Wang, Y. P. Zhang, C. Zou, Effects of deflectors on the wake and aerodynamic drag of a 25° slant angle Ahmed model, Journal of Experiments in Fluid Mechanics, 2014, 28(1): 31-37.

Google Scholar

[5] X. Song, Z. Q. Gu, Y. B. He, X. Gong and T. L. Zhou, Research of Lift Force on an Ahmed Model, Automotive Engineering, 2010, 32(10): 846-850.

Google Scholar

[6] W. Meile, G. Brenn, A. Reppenhagen, B. Lechner, A. Fuchs, Experiment and numerical simulations on the aerodynamics of the Ahmed body, CFD letters, 2011, 3(1): 32-39.

Google Scholar

[7] H. Lienhart, C. Stoots, S. Becker, Flow and Turbulence Structures in the Wake of a Simplified Car Model, SAE technical Paper Series 2003-01-0656.

DOI: 10.4271/2003-01-0656

Google Scholar