轮辐设计特征参数对整车气动特性的影响

doi:10.13229/j.cnki.jdxbgxb20190960

Abstract

Abstract:

In order to explore the influence of spoke features on vehicle aerodynamic drag coefficient （C_d）， an improved MIRA model was studied in Fluent to investigate the relationship of vehicle aerodynamic drag coefficient with different spoke offset distances and curvatures. Meanwhile， the reasons of drag variance in different cases were analyzed. Then combination cases were explored on the influence of various conditions on the vehicle C_d. The simulation results indicate that smaller spoke offset distance is beneficial to the C_d reduction， and when the wheel spokes offset distance is 10 mm， the vehicle C_d is minimum， which is 0.2514. Compared with the base case， the rate of C_d reduction is 5.56%. The increase in spoke curvatures will increase the vehicle aerodynamic drag coefficient.

Key words: aerodynamics, spoke offset distance, spoke curvature, aerodynamic drag coefficient, numerical simulation

CLC Number:

U461.1

Chang SU,Ying HAN,Ying-chao ZHANG,Zhen-hua MIAO. Influence performance with wheel spoke design parameters of vehicle aerodynamic[J].Journal of Jilin University(Engineering and Technology Edition), 2021, 51(1): 107-113.

Figures/Tables 18

Fig.1

Table 1

Fig.2

Fig.3

Table 2

Relationship between surface mesh size and Cd of MIRA model"

车身面网格尺寸/mm	网格总数/万	C_d	$?$ C_d
15	612	0.2992	1.08%
10	1383	0.2985	0.84%
7.5	2131	0.2987	0.91%
Exp.	-	0.296	-

Table 2

Fig.4

Table 3

Table 4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Table 5

Fig.10

Fig.11

Table 6

Fig.12

References 15

1	Blocken B, van Druenen T, Toparlar Y, et al. Aerodynamic drag in cycling pelotons: new insights by CFD simulation and wind tunnel testing[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2018, 179: 319-337.
2	张英朝, 杜冠茂, 田思, 等. 35°Ahmed模型气动射流减阻主动控制[J]. 吉林大学学报: 工学版, 2019, 49(2): 351-358.
	Zhang Ying-chao, Du Guan-mao, Tian Si, et al. Active flow control of 35°Ahmed model to reduce aerodynamic drag with steady jet[J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(2):351-358.
3	Hobeika T, Sebben S. CFD investigation on wheel rotation modelling[J]. Journal of Wind Engineering & Industrial Aerodynamics, 2018, 174: 241-251.
4	傅立敏, 胡兴军, 张世村. 车轮辐板开孔对汽车外流场影响的数值模拟[J]. 农业机械学报, 2006, 37(1): 8-11.
	Fu Li-min, Hu Xing-jun, Zhang Shi-cun. Numerical simulation of influence of holes in wheel spokes on automotive external flow-field[J]. Transactions of the Chinese Society for Agricultural Machinery, 2006, 37(1): 8-11.
5	Schnepf B, Schütz T, Indinger T. Further investigations on the flow around a rotating, isolated wheel with detailed tread pattern[J]. SAE International Journal of Passenger Cars-Mechanical System, 2015, 8(1): 261-274.
6	谷正气, 林肖辉, 李伟平, 等. 车轮辐板形状对汽车气动阻力影响分析[J]. 科技导报, 2011, 29(6): 57-61.
	Gu Zheng-qi, Lin Xiao-hui, Li Wei-ping, et al. Effect of the shape of wheel spokes on vehicle aerodynamic performance [J]. Science & Technology Review, 2011, 29(6): 57-61.
7	胡兴军, 傅立敏, 张世村, 等. 具有不同辐板车轮的空气动力学特性研究[J]. 同济大学学报:自然科学版, 2006, 34(12): 1684-1688.
	Hu Xing-jun, Fu Li-min, Zhang Shi-cun, et al. Research on aerodynamic characteristics of automotive wheels with different wheel spokes[J]. Journal of Tongji University (Natural Science), 2006, 34(12): 1684-1688.
8	王国华, 高青, 刘研, 等. 车轮轮辋内部流场特性分析[C]∥中国汽车工程学会年会论文集.长春:中国汽车工程学会, 2010: 705-708.
9	Hobeika T, Sebben S, Landstrom C. Investigation of the influence of tyre geometry on the aerodynamics of passenger cars[J]. SAE International Journal of Passenger Cars-Mechanical System, 2013, 6(1): 316-325.
10	Duncan B D, Kandasamy S, Sbeih K, et al. Further CFD studies for detailed tires using aerodynamics simulation with rolling road conditions[C]∥SAE Paper, 2010-01-0756.
11	Landstrom C, Josefsson L, Walker T, et al. Aerodynamic effects of different tire models on a sedan type passenger car[J]. SAE International Journal of Passenger Cars-Mechanical System, 2012, 5(1): 136-151.
12	周华, 杨志刚, 朱晖. 基于整车风洞试验的MIRA车型数值计算[J]. 吉林大学学报:工学版, 2019, 49(4): 1043-1053.
	Zhou Hua, Yang Zhi-gang, Zhu Hui. Aerodynamic calculation of MIRA model correlated with wind tunnel test[J]. Journal of Jilin University (Engineering and Technology Edition), 2019, 49(4): 1043-1053.
13	Yu X, Jia Q, Bao D, et al. A comparative study of different wheel rotating simulation methods in automotive aerodynamics[C]∥SAE Paper, 2018-01-0728.
14	Diasinos S, Barber T J, Doig G. The effects of simplifications on isolated wheel aerodynamics[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2015, 146: 90-101.
15	贾青, 李挺, 杨志刚. 旋转孤立车轮局部流场的影响评价[J]. 同济大学学报:自然科学版, 2014, 42(2): 287-291.
	Jia Qing, Li Ting, Yang Zhi-gang. Influence of rotating wheels on isolated wheel aerodynamics[J]. Journal of Tongji University (Natural Science), 2014, 42(2): 287-291.

Related Articles 15

[1]	Wei LAN,Jiang LIU,Li XIN,Jing-xi LI,Xing-jun HU,Jing-yu WANG,Tao SANG. Influence of rearview mirror styling on water phase distribution on side windows [J]. Journal of Jilin University(Engineering and Technology Edition), 2020, 50(5): 1590-1599.
[2]	Zheng-wei GU,Lin CHEN,Li-hui ZHAO,Hong XU,Xin LI,Ge YU. Simulation of stamping process of some reinforcement plate below windows of railway vehicles [J]. Journal of Jilin University(Engineering and Technology Edition), 2020, 50(2): 504-511.
[3]	Xin CHEN,Ning WANG,Chuan-liang SHEN,Xiao FENG,Chang-hai YANG. Effect of rearview mirror modeling on aerodynamic noise of front window [J]. Journal of Jilin University(Engineering and Technology Edition), 2020, 50(2): 426-436.
[4]	Li XIN,Wei LAN,Jiang LIU,Qin-lin WAN,Peng GUO,Xing-jun HU,Yang XIAO. Simulation and control of pollution on automobile body surface during wading [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1786-1794.
[5]	Wei-ping SHI,Xu ZHAO,Xing-jun HU,Tian-ming YU,Bo-wen LIU,Yan DUAN. Design and numerical simulation of water restriction device AICD for natural gas exploitation [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1986-1991.
[6]	Ya-feng GONG,Bo WANG,Guo-jin TAN,Li-min ZHANG,Wen-ding WU,Hai-peng BI. Comparative analysis of mechanical characteristics of two typical fabricated culverts in Jilin [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(6): 1865-1870.
[7]	Xing-jun HU,Zheng HUI,Peng GUO,Yang-hui ZHANG,Jing-long ZHANG,Jing-yu WANG,Fei LIU. Characteristics of aerodynamics for an automobile by fluid-structure coupled method [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(5): 1414-1419.
[8]	Zhuo YI,Wen-zhi FU,Ming-zhe LI. Numerical simulation and experiment on double⁃layered split ultrahigh pressure die [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(5): 1593-1599.
[9]	Xin LI,Yan-peng SUN,Dan WANG,Jun-xu CHEN,Zheng-wei GU,Hong XU. Finite element numerical simulation for automobile front floor forming [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(5): 1608-1614.
[10]	Hua ZHOU,Zhi⁃gang YANG,Hui ZHU. Aerodynamic calculation of MIRA model correlated with wind tunnel test [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1043-1053.
[11]	Xue⁃guang ZHANG,Ming⁃meng JIA,Chun⁃guo LIU,Guang⁃zhong HE. Trajectory design and FE simulation for profile stretch bending based on incremental control method [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1272-1279.
[12]	Xin LI,Dan WANG,Jun⁃xu CHEN,Yan⁃peng SUN,Zheng⁃wei GU,Hong XU. Numerical simulation for handbrake fixed plate forming [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1258-1265.
[13]	Zhao⁃wei QU,Zhao⁃tian PAN,Yong⁃heng CHEN,Peng⁃fei TAO,Di SUN. Car⁃following model with improving safety distance based on optimal velocity model [J]. Journal of Jilin University(Engineering and Technology Edition), 2019, 49(4): 1092-1099.
[14]	GUO Hao-tian,XU Tao,LIANG Xiao,YU Zheng-lei,LIU Huan,MA Long. Optimization on thermal surface with rib turbulator inspired by turbulence of alopias' gill in simplified gas turbine transition piece [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1793-1798.
[15]	GONG Ya-feng, WANG Bo, WEI Hai-bin, HE Zi-heng, HE Yu-long, SHEN Yang-fan. Surface subsidence law of double-line shield tunnel based on Peck formula [J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(5): 1411-1417.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

Comments

Recommended 0

No Suggested Reading articles found!

L/mm	曲率k
L/mm	0	0.001	0.002	0.003	0.004
0	a1	b1	c1	d1	e1
10	a2	b2	c2	d2	e2
20	a3	b3	c3	d3	e3
30	a4	b4	c4	d4	e4
40	a5	b5	c5	d5	e5

计算域	边界条件	设置值
入口	Velocity inlet	20 m/s
出口	Pressure outlet	0 Pa
车轮	Moving wall	59.85 rad/s
侧面	Wall	Symmetry
底面	Wall	Wall

模型	前轮阻力系数	后轮阻力系数	整车阻力系数
a1	0.0296	0.023	0.2662
a2	0.03	0.0253	0.2514
a3	0.03	0.0261	0.259
a4	0.0312	0.0265	0.2657
a5	0.0332	0.0273	0.2776

模型	前轮阻力系数	后轮阻力系数	整车阻力系数
a1	0.0296	0.023	0.2662
b1	0.0294	0.0237	0.2669
c1	0.0312	0.0217	0.2677
d1	0.031	0.024	0.2707
e1	0.0339	0.0178	0.2755

模型	前轮阻力系数	后轮阻力系数	整车阻力系数
a1	0.0296	0.023	0.2662
a2	0.03	0.0253	0.2514
a3	0.03	0.0261	0.259
a4	0.0312	0.0265	0.2657
a5	0.0332	0.0273	0.2776
b1	0.0294	0.0237	0.2669
b2	0.0286	0.0233	0.2656
b3	0.0286	0.0243	0.2638
b4	0.0301	0.0249	0.2669
b5	0.028	0.0266	0.2643
c1	0.0312	0.0217	0.2677
c2	0.0303	0.0254	0.2748
c3	0.0295	0.0254	0.2749
c4	0.0287	0.0246	0.2640
c5	0.0296	0.0252	0.2659
d1	0.031	0.024	0.2707
d2	0.0329	0.0224	0.2738
d3	0.0339	0.023	0.2723
d4	0.0325	0.0209	0.2668
d5	0.0311	0.0248	0.2739
e1	0.0339	0.0178	0.2755
e2	0.0314	0.0232	0.2704
e3	0.0354	0.0244	0.2799
e4	0.0338	0.0224	0.2716
e5	0.0322	0.0242	0.2758

Influence performance with wheel spoke design parameters of vehicle aerodynamic

RICH HTML

PDF (PC)