TY - GEN
T1 - Enhancing Effect of Leeward Side Deflector on High-Speed Trains Aerodynamic Performance Under Crosswinds
AU - Chen, Zheng Wei
AU - Zeng, Guang Zhi
AU - Guo, Zhan Hao
N1 - Publisher Copyright:
© 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2023/12/1
Y1 - 2023/12/1
N2 - To enhance the aerodynamic performance of high-speed trains in crosswinds, the aerodynamic forces and flow structures of the high-speed train with the deflector are investigated in this work, while the influence of deflectors on the train’s leeward side in various positions on the train’s aerodynamic performance is also compared. The results show that the deflector configured on the leeward side of the train has a notable effect on reducing the rolling moment coefficient (CMx), as compared to the case without a deflector, resulting in a decrement of 4.39%, 11.66%, and 19.80% at position A, position B and position C, respectively. The flow structures around the train further reveal that the deflector plate inhibits the winding and acceleration of vortexes formed in the leeward side of the train and weakens the concentrated as well as strong energy of the vortices, compared to the case without deflector, and therefore leading to an improvement in the train's aerodynamic performance in crosswind environments.
AB - To enhance the aerodynamic performance of high-speed trains in crosswinds, the aerodynamic forces and flow structures of the high-speed train with the deflector are investigated in this work, while the influence of deflectors on the train’s leeward side in various positions on the train’s aerodynamic performance is also compared. The results show that the deflector configured on the leeward side of the train has a notable effect on reducing the rolling moment coefficient (CMx), as compared to the case without a deflector, resulting in a decrement of 4.39%, 11.66%, and 19.80% at position A, position B and position C, respectively. The flow structures around the train further reveal that the deflector plate inhibits the winding and acceleration of vortexes formed in the leeward side of the train and weakens the concentrated as well as strong energy of the vortices, compared to the case without deflector, and therefore leading to an improvement in the train's aerodynamic performance in crosswind environments.
KW - Aerodynamic performance
KW - CFD
KW - Crosswind environment
KW - Deflector
KW - High-speed train
UR - http://www.scopus.com/inward/record.url?scp=85180630563&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-42987-3_30
DO - 10.1007/978-3-031-42987-3_30
M3 - Conference article published in proceeding or book
AN - SCOPUS:85180630563
SN - 9783031429866
T3 - Mechanisms and Machine Science
SP - 425
EP - 435
BT - Computational and Experimental Simulations in Engineering - Proceedings of ICCES 2023—Volume 2
A2 - Li, Shaofan
PB - Springer Science and Business Media B.V.
T2 - 29th International Conference on Computational and Experimental Engineering and Sciences, ICCES 2023
Y2 - 26 May 2023 through 29 May 2023
ER -