Comparison of Aerodynamic Characteristics of High-Speed Train for Different Configurations of Aerodynamic Braking Plates Installed in Inter-Car Gap Region

被引：15
|
作者：
Niu, Jiqiang [1 ,2 ]
Wang, Yueming [1 ,2 ]
Li, Rui [3 ,4 ,5 ]
Liu, Feng [6 ,7 ]
机构：
[1] Southwest Jiaotong Univ, Sch Mech Engn, Chengdu 610031, Sichuan, Peoples R China
[2] Technol & Equipment Rail Transit Operat & Mainten, Chengdu 610031, Sichuan, Peoples R China
[3] Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China
[4] Lanzhou Jiaotong Univ, Sch Mech Engn, Lanzhou 730070, Gansu, Peoples R China
[5] Univ Birmingham, Birmingham Ctr Railway Res & Educ, Birmingham B15 2TT, W Midlands, England
[6] Taiyuan Univ Technol, Coll Mech Engn, Taiyuan 030024, Shanxi, Peoples R China
[7] Univ Aberdeen, Dept Engn, Aberdeen AB24 3UE, Scotland
来源：
FLOW TURBULENCE AND COMBUSTION | 2021年 / 106卷 / 01期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
High-speed train; Aerodynamic characteristics; Aerodynamic braking plate; ICG; Numerical simulation; DIFFERENT NOSE LENGTHS; TURBULENCE MODELS; NUMERICAL-SIMULATION; DYNAMIC-ANALYSIS; REYNOLDS-NUMBER; FLOW-FIELDS; PERFORMANCE; DRAG; SLIPSTREAM; FORCE;
D O I：
10.1007/s10494-020-00196-0
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An improved delayed detached eddy simulation based on a shear-stress transport kappa-omega turbulence model is used to investigate the aerodynamic characteristics of a high-speed train with an aerodynamic braking plate installed in the inter-car gap (ICG) region. The flow field and the aerodynamic performance of high-speed trains with different aerodynamic braking plate configurations are compared and analysed. The numerical method used in this study is verified through a wind tunnel test. Results show that opening the plates installed in the ICG significantly increased the aerodynamic drag of the train, especially large downstream plates with relatively small fluctuations in the aerodynamic forces relative to those of large upstream plates. The braking plates significantly affected the levels of downstream ICG turbulence, which then interacted with the external flow to reduce the wake profile.
引用
收藏
页码：139 / 161
页数：23
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