Experimental Study of the Pressure Rise due to Tunnel Entry of a High-Speed Train

2014 ◽  
pp. 335-342 ◽  
Author(s):  
Daniela Heine ◽  
Klaus Ehrenfried
Keyword(s):  
Experimental Study ◽  
High Speed ◽  
Pressure Rise ◽  
High Speed Train

A Numerical and Experimental Study of Sonic Booms Generated in High-Speed Train Tunnels

1995 ◽  
pp. 353-358 ◽  
Author(s):  
A. Sasoh ◽  
T. Saito ◽  
S. Funabashi ◽  
O. Onodera ◽  
K. Takayama ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Speed ◽  
High Speed Train ◽  
Sonic Booms

In situ experimental study on high speed train induced ground vibrations with the ballast-less track

2017 ◽  
Vol 102 ◽  
pp. 195-214 ◽  
Author(s):  
Shi-Jin Feng ◽  
Xiao-Lei Zhang ◽  
Lei Wang ◽  
Qi-Teng Zheng ◽  
Feng-Lei Du ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Speed ◽  
High Speed Train ◽  
Ground Vibrations

Influence of Separation on the Compression Wave Generated by a Train Entering a Tunnel

2003 ◽  
Vol 2 (1) ◽  
pp. 13-33 ◽  
Author(s):  
M. S. Howe ◽  
M. Iida
Keyword(s):  
Compression Wave ◽  
High Speed ◽  
Pressure Rise ◽  
Field Measurements ◽  
Detailed Comparison ◽  
Viscous Drag ◽  
High Speed Train ◽  
Tunnel Wall ◽  
Comparison With Experiment ◽  
Large Vortex

An analytical model is proposed for calculating the influence of separation behind the nose of a high-speed train on the compression wave produced when the train enters a tunnel. The viscous drag associated with the back flow over the train and over the adjacent tunnel wall produces an aeroacoustic dipole whose strength increases linearly with the distance of the train nose into the tunnel and accounts for the linearly growing tail of the compression wave observed in model scale and field measurements. A detailed comparison with experiment suggests also that the contribution to the compression wave pressure rise from the large vortex ejected from the tunnel portal when the nose passes into the tunnel is in practice likely to be small, contrary to previous predictions that have modelled the exit flow as a uniform parallel jet exhausting from the tunnel.

Resistance Coefficient Research of the Train Air Supply Orifice

2012 ◽  
Vol 614-615 ◽  
pp. 475-479
Author(s):  
Hai Ying Wang ◽  
Chun Fang Li ◽  
Song Tao Hu ◽  
Lin Song
Keyword(s):  
Experimental Study ◽  
Temperature Field ◽  
Air Conditioning ◽  
High Speed ◽  
Plate Thickness ◽  
Resistance Coefficient ◽  
High Speed Train ◽  
Air Conditioning System ◽  
Air Supply ◽  
Air Conditioning Systems

High-speed train air-conditioning systems put forward higher request on the aspect of air uniformity and comfort. The use of orifice which can form a more uniform velocity and temperature field in the car can be widely applied to high-speed train air-conditioning system. The experimental study of the influence of several different factors (such as the opening rate, aperture, orifice plate thickness, etc.) in the research may provide a reference for the design choices of the orifice type.

A Small-Scale Experimental Study of the Damage Due to Intermittent Shoe Braking on the Tread of High-Speed Train Wheels

2020 ◽  
Vol 63 (6) ◽  
pp. 1041-1050
Author(s):  
Michela Faccoli ◽  
Luca Provezza ◽  
Candida Petrogalli ◽  
Andrea Ghidini ◽  
Angelo Mazzù
Keyword(s):  
Experimental Study ◽  
High Speed ◽  
Small Scale ◽  
High Speed Train
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