全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2014 

时变侧风下双层客车的流固耦合数值模拟

, PP. 203-207

Keywords: 流固耦合,ALE方法,客车,侧风稳定性,数值模拟

Full-Text   Cite this paper   Add to My Lib

Abstract:

流固耦合效应会影响行驶安全性。利用任意拉格朗日-欧拉(ALE)方法对某型客车1︰1模型实施时变侧风下的流固耦合数值模拟。其中车辆使用系统六自由度动力学模型简化,并选取了三种典型的侧风工况(线性、伪阶跃、正弦)分别模拟。对于各类工况,通过耦合与非耦合计算的比较,得到流固耦合效应对气动升力和俯仰力矩影响较显著。其机理在于流固耦合效应造成的流场结构的变化。有助于量化了解流固耦合效应对各个气动力的影响,为更精细地模拟车辆行驶状态提供计算方法上的参考。

References

[1]  谷正气, 王和毅, 罗荣锋, 等. 计及风压中心漂移的汽车侧风稳定性研究[J]. 湖南大学学报, 2005, 32(3): 70―73.
[2]  Gu Zhengqi, Wang Heyi, Luo Rongfeng, et al. Study on automobile cross-wind stability in consideration of pressure center’s shift [J]. Journal of Hunan University (Nature Science), 2005, 32(3): 70―73. (in Chinese)
[3]  海贵春, 谷正气, 王和毅, 等. 侧风对汽车高速行驶性能影响的仿真研究[J]. 湖南大学学报, 2006, 33(2): 40―43.
[4]  Hai Guichun, Gu Zhengqi, Wang Heyi, et al. Research on the effect of crosswinds on the stability of high speed vehicles [J]. Journal of Hunan University (Natural Sciences), 2006, 33(2): 40―43. (in Chinese)
[5]  Alexander A A, Brian S R, Walter W W. The influence of vehicle aerodynamic and control response characteristics on driver-vehicle performance [J]. SAE, 1979, 88(2): 1391―1399.
[6]  Richard H K, Jeffrey R H. Effects of crosswind on vehicle response —full-scale tests and analytical predictions [J]. SAE, 1980, 89(3): 2578―2590.
[7]  谷正气. 汽车空气动力学[M]. 北京: 人民交通出版社, 2005: 102.
[8]  Gu Zhengqi. Automotive aerodynamics [M]. Beijing: China Communications Press, 2005: 102. (in Chinese)
[9]  朱洪来, 白象忠. 流固耦合问题的描述方法及分类简化准则[J]. 工程力学, 2007, 24(10): 92―99.
[10]  Zhu Honglai, Bai Xiangzhong. Description method and simplified classification rule for fluid-solid interaction problems [J]. Engineering Mechanics, 2007, 24(10): 92―99. (in Chinese)
[11]  Grotjans H, Menter F R. Wall functions for general application CFD codes [C]// Papailiou K D, et al. ECCOMAS 98 Proceedings of the Fourth European Computational Fluid Dynamics Conference, 1998: 1112―1117.
[12]  Three-dimensional navier stokes predictions of steady-state rotor/stator interaction with pitch change [C]. 3rd Annual Conference of the CFD, Society of Canada, Banff, Alberta, Canada, Advanced Scientific Computing Ltd, by P.F. Galpin, R.B. Broberg and B.R. Hutchinson, June 25-27, 1995.
[13]  Degand C, Farhat C. A three-dimensional torsional spring analogy method for unstructured dynamic meshes [J]. Computers and Structures, 2002, 80(3/4): 305―316.
[14]  Shen Chen, Zhu Hui, Yang Zhigang. Study on the aerodynamics mechanism of passenger car under unsteady crosswind [C]. Advanced Materials Research, 631-632(2013), 2013: 809―816.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133