TY - JOUR
T1 - A CFD analysis of the aerodynamics of a highspeed train passing through a windbreak transition under crosswind
AU - Liu, Tanghong
AU - Chen, Zhengwei
AU - Zhou, Xisai
AU - Zhang, Jie
N1 - Funding Information:
This work was supported by the Project of Innovation-Driven Plan of Central South University (Grant No. 2015CX003), the National Science Foundation of China (Grant Nos. U1334205 and U1534210), the Fok Ying Tong Education Foundation of China (Grant No. 132014), the Projects (Grant Nos. 2015T002-A, 2015J007-N and 2016T004-E) supported by the Technological Research and Development Program of China Railway, and the graduate student independent innovation project of Central South University (Grant No. 2017zzts197).
Publisher Copyright:
© 2017 The Author(s).
PY - 2018/8/10
Y1 - 2018/8/10
N2 - In areas with strong wind, windbreaks are built along railways to reduce the impact of wind on trains. However, because of the restrictions imposed by actual terrain, windbreak structures are often not uniform, such as from a cutting to an embankment, resulting in a discontinuous transition region. When a train runs through this region, a distinct yawing phenomenon occurs. This study numerically explored the aerodynamic features of a train running through a rectangular windbreak transition region. The variations in the pressure, side force, and moment of a train were analyzed, and the flow field features were clarified. Furthermore, the yawing motion of the car body with time was described. Finally, based on EN14067-6, the critical wind speed was obtained using the safety assessment of a train running through a windbreak transition region.
AB - In areas with strong wind, windbreaks are built along railways to reduce the impact of wind on trains. However, because of the restrictions imposed by actual terrain, windbreak structures are often not uniform, such as from a cutting to an embankment, resulting in a discontinuous transition region. When a train runs through this region, a distinct yawing phenomenon occurs. This study numerically explored the aerodynamic features of a train running through a rectangular windbreak transition region. The variations in the pressure, side force, and moment of a train were analyzed, and the flow field features were clarified. Furthermore, the yawing motion of the car body with time was described. Finally, based on EN14067-6, the critical wind speed was obtained using the safety assessment of a train running through a windbreak transition region.
KW - Crosswind
KW - Cutting and embankment
KW - High-speed train
KW - Moving mesh
KW - Pressure and load change
KW - Windbreak transition region
UR - http://www.scopus.com/inward/record.url?scp=85027151257&partnerID=8YFLogxK
U2 - 10.1080/19942060.2017.1360211
DO - 10.1080/19942060.2017.1360211
M3 - Journal article
AN - SCOPUS:85027151257
SN - 1994-2060
VL - 12
SP - 137
EP - 151
JO - Engineering Applications of Computational Fluid Mechanics
JF - Engineering Applications of Computational Fluid Mechanics
IS - 1
ER -