The Influence of Wheel Spoiler Height on Vehicle Drag Reduction
Fluid Mechanics
Volume 1, Issue 2, September 2015, Pages: 11-17
Received: Aug. 29, 2015; Accepted: Sep. 22, 2015; Published: Sep. 28, 2015
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Authors
Q. Jia, Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University, Shanghai, China; School of Automotive Studies, Shanghai, China
M. M. Rashidi, Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University, Shanghai, China; ENN-Tongji Clean Energy Institute of Advanced Studies, Shanghai, China
SB. Ju, Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University, Shanghai, China; School of Automotive Studies, Shanghai, China
ZG. Yang, Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Tongji University, Shanghai, China; School of Automotive Studies, Shanghai, China
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Abstract
Simplified vehicle has been applied in this paper to study the influence of wheel spoiler height on vehicle drag reduction. Two different conditions including stationary and rotating wheels were employed in numerical simulation with steady RANS (Reynolds Averaged Navier-Stokes) equations. Based on detailed analysis of flow around the wheels and integral curve of vehicle drag, it can be concluded that for both the stationary and rotating conditions, the drag decreased first and then increased as the spoiler height gets bigger. For front wheel spoiler, the optimal wheel spoiler height for stationary conditions lower than rotating one due to different drag reduction mechanism, so in wind tunnel test rotating condition was performed.
Keywords
Automobile, Wheel Spoiler, Aerodynamic Drag, Numerical Simulation
To cite this article
Q. Jia, M. M. Rashidi, SB. Ju, ZG. Yang, The Influence of Wheel Spoiler Height on Vehicle Drag Reduction, Fluid Mechanics. Vol. 1, No. 2, 2015, pp. 11-17. doi: 10.11648/j.fm.20150102.12
References
[1]
A. Huminic, A. Chiru, On CFD investigations of vehicle aerodynamics with rotating wheels’ simulation, SAE, 2006: doi: 10.4271/2006-01-0804.
[2]
A. Cogotti, Aerodynamic characteristics of car wheels, Technological Advances in Vehicle Design, 1983, 13(3): 173.
[3]
I. Dimitriou, S. Klussmann, Aerodynamic forces of exposed and enclosed rotating wheels as an example of the synergy in the development of racing and passenger cars, SAE, 2006: doi:10.4271/2006-01-0805.
[4]
F. Li min, H. Xing-Jun, Z. Shi cun, Numerical simulation of influence of holes in wheel spokes on automotive external flow-field, Journal of agricultural mechanics, 2006, 01:8-11.
[5]
F. Li min, H. Xing jun, Z. Shi cun, Research on numerical simulation for the flow field around automotive wheels with different geometric parameters, Automotive Engineering, 2006,05:451-454-459.
[6]
G. Zheng qi, L. Xiao-hui, L. Weipin, Effect of the shape of wheel spokes on vehicle aerodynamic performance, Science & Technology Review, 2011, 06: 57-61.
[7]
H. Xing jun, F. Li min, Z. Shi cun, Research on aerodynamic characteristics of Automotive Wheels with different wheel spokes, Journal of Tongji University (Natural Science), 2006, 12:1684-1688.
[8]
H. Xing-Jun,L. Fei, G. Peng, Influence of wheel spoiler on aerodynamic drag of passenger car, Jilin Daxue Xuebao, 2012, p32-36.
[9]
S. Krajnovic, S. Sarmast, B. Basara, Numerical investigation of the flow around a simplified wheel in a wheel house, Fluids Engineering, 2011, 133(11):126.
[10]
A. P. Mears, R. G. Dominy, D. B. Sims-Williams, The air flow about an exposed racing wheel SAE, 2002: doi:10.4271/2002-01-3290.
[11]
J. Qing, T. Li, Z. Yang, Influence of rotating wheels on isolated wheels aerodynamics[J].Journal of Tongji University(Natural Science), 2014, 02:287-291.
[12]
J. Qing, T. Li, Z. Yang, Influence of rotating wheels on isolated wheels aerodynamics[J].Journal of Tongji University(Natural Science), 2014,06:949–955.
[13]
S. R. Ahmed, R. Ramm, G. Faltin, Some salient features of the time-averaged ground vehicle wake. SAE technical Paper Series 840300, 1984: 481.
[14]
A. F. Skea, P. R. Bullen, J. Qiao, CFD Simulations and experimental measurements of the flow over a rotating wheel in a wheel arch, SAE, 2000:2000-01-0487.
[15]
G. Wickern, K. Zwicker, M. Pfadenhauer, Rotating wheels-Their impact on wind tunnel test techniques and on vehicle drag result, SAE, 1997: 97-01-33.
[16]
Z. Yang, X. Sha, J. Qing, Influence of wheel width on vehicle aerodynamic drag, Journal of Tongji University (Natural Science), 2014, 11:1682-1686+1732.
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