中国铁道科学2012，Vol.33Issue(3)：98-101,4.DOI:10.3969/j.issn.1001-4632.2012.03.16
空气动力制动风翼在车上布置数值仿真研究
Numerical Simulation Research on the Arrangement of the Aerodynamic Braking Plates in the Train
摘要
Abstract
Fluid simulation analysis software FLUENT was adopted to study the influence zone of the wake of the braking plate as well as the influence of its lengthwise distance on braking effect. Meanwhile, the influence law of its different lateral distance on braking resistance was analyzed. Results indicate that the lengthwise distance between two braking plates has a negative correlation with the effect of the wake of the front braking plate on the back one. As the lengthwise distance between two braking plates exceeds the length of two railway carriages! The effect completely diminishes. The increase of the lateral distance of two braking plates can increase the braking resistance per unit area provided that the areas of the plates are equal. The instantaneous deceleration caused by braking plate increases with the initial speed. The total braking resistance caused by braking plate is about 160 kN when the initial speed of emergency braking is 500 km ? H-1, here the instantaneous deceleration is around 0. 33 m ? S-1. In conclusion, the braking resistance generated by aerodynamic braking contributes a great deal to the braking of high-speed train when train speed is very high, which proves that aerodynamic braking has excellent braking performance for high-speed train.关键词
空气动力制动/制动风翼/纵向间距/横向间距/布置Key words
Aerodynamic braking/ Brake plate/ Vertical distance/ Lateral distance/ Arrangement分类
交通工程引用本文复制引用
田春,吴萌岭,朱洋永,费巍巍..空气动力制动风翼在车上布置数值仿真研究[J].中国铁道科学,2012,33(3):98-101,4.基金项目
"十一五"国家科技支撑计划项目(2009BAG12A05-13) （2009BAG12A05-13）
