Aerodynamic characteristics of double-connected train groups composed of different kinds of high-speed trains under crosswinds: A comparison study

被引:23
作者
Huo, Xiao-Shuai [1 ,2 ,3 ]
Liu, Tang-Hong [1 ,2 ,3 ]
Chen, Zheng-Wei [4 ]
Li, Wen-Hui [1 ,2 ,3 ]
Niu, Ji-Qiang [5 ]
Gao, Hong-Rui [1 ,2 ,3 ]
机构
[1] Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minist Educ, Changsha 410075, Peoples R China
[2] Cent South Univ, Sch Traff & Transportat Engn, Joint Int Res Lab Key Technol Rail Traff Safety, Changsha 410075, Peoples R China
[3] Cent South Univ, Natl & Local Joint Engn Res Ctr Safety Technol Rai, Sch Traff & Transportat Engn, Changsha 410075, Peoples R China
[4] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Kowloon, Hong Kong, Peoples R China
[5] Southwest Jiaotong Univ, Sch Mech Engn, Chengdu 610031, Sichuan, Peoples R China
基金
国家重点研发计划; 中国国家自然科学基金;
关键词
High-speed train; Improved delayed detached-eddy simulation (IDDES); Aerodynamic forces; Flow structures; Pressure and slipstream; DIFFERENT NOSE LENGTHS; RAILWAY VEHICLES; PERFORMANCE; WIND; SLIPSTREAM; SIMULATION; FLOW; OPTIMIZATION; MODELS; FORCES;
D O I
10.1016/j.aej.2022.09.011
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
As train speeds continuously increase, the crosswind stability of high-speed trains (HSTs) has been a prominent research topic. Benefiting from advances in railway technology, the coupled operation of different HSTs has been proven to be permissible, but the crosswind performance of double-connected train groups composed of different kinds of HSTs has rarely been studied. This paper therefore studied the differences in the aerodynamic performance of double-connected train groups composed of same and different train units under crosswinds. We employed an improved delayed detached-eddy simulation (IDDES) method to investigate the flow features around different groups of double-connected train. Two one-eighth-scale standard HSTs-Train 1 (T 1) and Train 2 (T 2)-currently operating in China were selected to form different group configurations for double-connected trains: T 1-T 1 (Case 1-1), T 1-T 2 (Case 1-2), T 2-T 1 (Case 2-1), and T 2-T 2 (Case 2-2). First, the reliability of the numerical algorithm and mesh independence were verified to ensure the accuracy of the numerical results. Second, the aerodynamic force coefficients, time-averaged, and instantaneous flow structures of different double-connected train group types were compared and analyzed.(c) 2022 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
引用
收藏
页码:465 / 481
页数:17
相关论文
共 57 条
[1]   Assessment of several modeling strategies on the prediction of lift-drag coefficients of a NACA0012 airfoil at a moderate Reynold number [J].
Almohammadi, K. M. .
ALEXANDRIA ENGINEERING JOURNAL, 2022, 61 (03) :2242-2249
[2]  
[Anonymous], 2012, ANSYS FLUENT Theory Guide
[3]  
B. En, 2010, RAILW APPL AER 6
[4]   Cross-wind effects on road and rail vehicles [J].
Baker, Chris ;
Cheli, Federico ;
Orellano, Alexander ;
Paradot, Nicolas ;
Proppe, Carsten ;
Rocchi, Daniele .
VEHICLE SYSTEM DYNAMICS, 2009, 47 (08) :983-1022
[5]   Wind tunnel tests on railway vehicles in the presence of windbreaks: Influence of flow and geometric parameters on aerodynamic coefficients [J].
Brambilla, E. ;
Giappino, S. ;
Tomasini, G. .
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2022, 220
[6]   Experimental study on the aerodynamic forces on railway vehicles in presence of turbulence [J].
Cheli, F. ;
Giappino, S. ;
Rosa, L. ;
Tomasini, G. ;
Villani, M. .
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2013, 123 :311-316
[7]   Mitigating crosswind effect on high-speed trains by active blowing method: a comparative study [J].
Chen, Zheng-Wei ;
Ni, Yi-Qing ;
Wang, You-Wu ;
Wang, Su-Mei ;
Liu, Tang-Hong .
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS, 2022, 16 (01) :1064-1081
[8]   Numerical simulation and comparison of the slipstreams of trains with different nose lengths under crosswind [J].
Chen, Zheng-Wei ;
Liu, Tang-Hong ;
Yan, Chun-Guang ;
Yu, Miao ;
Guo, Zi-Jian ;
Wang, Tian-Tian .
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2019, 190 :256-272
[9]   Sudden flow induced by mountain ridges beside windbreaks in a railway and its mitigation measures [J].
Chen, Zhengwei ;
Ni, Yiqing .
TRANSPORTATION SAFETY AND ENVIRONMENT, 2022, 4 (01)
[10]   Aerodynamic performance and dynamic behaviors of a train passing through an elongated hillock region beside a windbreak under crosswinds and corresponding flow mitigation measures [J].
Chen, Zhengwei ;
Liu, Tanghong ;
Li, Wenhui ;
Guo, Zijian ;
Xia, Yutao .
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, 2021, 208 (208)