侧风对某SUV汽车气动特性影响的数值模拟研究
详细信息 查看官网全文
- 英文论文题名：Numerical Simulation Study of Crosswind Effects on the Aerodynamic Characteristic of a SUV
- 论文作者：李林 ; 王俊 ; 龚旭 ; 孙庆岭 ; 代丙坤
- 英文论文作者：Li Lin ; Wang Jun ; Gong Xu ; Sun Qingling ; Dai Bingkun ; Changan Auto R&D Center ; Changan Automobile Co ; Ltd
- 年：2016
- 作者机构：长安汽车公司汽车工程研究总院;
- 论文关键词：汽车 ; 空气动力学 ; 格栅 ; 侧风
- 英文论文关键词：car ; aerodynamics ; grille ; crosswind
- 会议召开时间：2016-10-26
- 会议录名称：2016中国汽车工程学会年会论文集
- 英文会议录名称：Proceedings of 2016 SAE-China Congress
- 语种：中文
- 分类号：U461.1
- 学会代码：QCGC
- 会议名称：2016中国汽车工程学会年会暨展览会
- 会议地点：中国上海
- 主办单位：中国汽车工程学会
- 学会名称：中国汽车工程学会
- 页数：4
- 文件大小：1327k
- 原文格式：O
- 会议级别：全国
摘要
在格栅开启和全部关闭两种状态下,利用计算流体力学软件STAR-CCM+对不同侧风偏角下某SUV的气动特性进行了数值模拟,得到了该车气动阻力系数、侧力系数以及横摆力矩系数随侧偏角变化的曲线。并将模拟结果与风洞实验进行对比,结果表明该车型在不同侧风偏角作用下,阻力系数、侧向力系数和横摆力矩系数均随着侧偏角增大而增大。封堵格栅对SUV阻力系数影响较大,而对侧力系数和横摆力矩系数影响较小。
Under the two states of car grille open and fully closed,and using CFD software STAR-CCM +,numerical simulations on the aerodynamic characteristics of a suv under crosswind conditions are conducted,and the car aerodynamic drag,side force coefficient and C_(YM) curves as the functions of yaw angle under different crosswind conditions are obtained.The simulation results are compared with that of wind tun-nel experiments.The results show that both the Cd,Cs and C_(YM) augment remarkably as the crosswind angle increases under the effect of the different crosswind angle.Block grille of a SUV effect on the Cd is larger,and less effect on the Cs
Under the two states of car grille open and fully closed,and using CFD software STAR-CCM +,numerical simulations on the aerodynamic characteristics of a suv under crosswind conditions are conducted,and the car aerodynamic drag,side force coefficient and C_(YM) curves as the functions of yaw angle under different crosswind conditions are obtained.The simulation results are compared with that of wind tun-nel experiments.The results show that both the Cd,Cs and C_(YM) augment remarkably as the crosswind angle increases under the effect of the different crosswind angle.Block grille of a SUV effect on the Cd is larger,and less effect on the Cs
引文
[1]谷正气.汽车空气动力学[M].北京:人民交通出版社.2005.
[2]龚旭,谷正气,李振磊,等.侧风状态下轿车气动特性数值模拟方法的研究[J].汽车工程,2010,32(1):13-16.
[3]Howell J.Aerodynamic Drag of Passenger Cars at Yaw[J].SAE Technical Paper 2015-01-1559.
[4]Howell J,Le Good G.The Effect of Backlight Aspect Ratio on Vortex and Base Drag for a Simple Car-Like Shape[J].SAE Technical Paper 2008-01-0737.
[5]Bettle J,Holloway A G L,VenartJES.A Computational Study of the Aerodynamic Forces Acting on a Tractor-trailer Vehicle on a Bridge in Cross-wind[J].Journal of Wind Engineering and Industrial Aerodynamics,2003,91:573-592.
[6]王夫亮,傅立敏.侧风对轿车气动特性影响的数值模拟研究[J].哈尔滨工业大学学报,2006,38(8):1255-12S8.
[2]龚旭,谷正气,李振磊,等.侧风状态下轿车气动特性数值模拟方法的研究[J].汽车工程,2010,32(1):13-16.
[3]Howell J.Aerodynamic Drag of Passenger Cars at Yaw[J].SAE Technical Paper 2015-01-1559.
[4]Howell J,Le Good G.The Effect of Backlight Aspect Ratio on Vortex and Base Drag for a Simple Car-Like Shape[J].SAE Technical Paper 2008-01-0737.
[5]Bettle J,Holloway A G L,VenartJES.A Computational Study of the Aerodynamic Forces Acting on a Tractor-trailer Vehicle on a Bridge in Cross-wind[J].Journal of Wind Engineering and Industrial Aerodynamics,2003,91:573-592.
[6]王夫亮,傅立敏.侧风对轿车气动特性影响的数值模拟研究[J].哈尔滨工业大学学报,2006,38(8):1255-12S8.