Study on aerodynamic comfort of high-speed trains passing each other through a tunnel
YAN Yaguang
YANG Qingshan
Abstract：Based on N-S equation and k-ε two equation turbulence model,simulation analyses are conducted on pressure changes inside trains and influences of different parameters on the riding comfort when two high-speed trains passing each other through a tunnel by using finite element method.The results show that the transient pressure inside trains is influenced by the place of trains passing each other,the length of trains,the speed of trains and the sealing index.The maximum transient pressure appears when two trains passing each other in the center of the tunnel when the length of trains,the speed of trains and the sealing index are the same.And compared to the transient pressure of trains with shorter length,that of trains with longer length is larger when the place of trains passing each other,the speed of trains and the sealing index stay the same.The transient pressure inside trains can satisfy the evaluation standard of 1.25kPa/3s under various operating conditions in this paper when the sealing index is higher than 15s.
Keywords：high-speed traintunnel engineeringtrains passing each otheraerodynamiccomfortnumerical simulation
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 56-61,67 )