Running Safety of High-speed Train Equipped with Aerodynamic Brake under Cross Wind

被引：4
|
作者：
Tian, Chun [1 ]
Wu, Meng-ling [1 ]
Zhu, Yang-yong [1 ]
Chen, Meng-ting [1 ]
机构：
[1] Tongji Univ, Res Inst Railway & Urban Mass Transit, Shanghai 200092, Peoples R China
来源：
ADVANCES IN POWER AND ELECTRICAL ENGINEERING, PTS 1 AND 2 | 2013年 / 614-615卷
关键词：
Cross Wind; Aerodynamic Brake; Flow Structure; Derailment Coefficient;
D O I：
10.4028/www.scientific.net/AMR.614-615.348
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The flow field structure and aerodynamic forces of trains with aerodynamic brake in cross-wind after simplifying the train's model are studied. Three-dimensional Reynolds average N-S equations (RANS) combining k-omega turbulence model is adopted. The SIMPLE method is used to couple the pressure and velocity. Firstly, the train's flow field's variation discipline caused by the aerodynamic brake is analyzed. Then the side force, lift force and rollover moment acting on the train with aerodynamic brake and the one without aerodynamic brake are compared on condition of various wind direction angles. The influence of the aerodynamic brake on trains' aerodynamic forces and derailment coefficient on condition of various wind direction are analysed. It comes to a conclusion that the derailment coefficient of the train with aerodynamic braking is truly increased but only slightly increased and all the derailment coefficients are under 0.8 which satisfy the safety request of the train's running safety.
引用
收藏
页码：348 / +
页数：2
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