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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.17 No.3
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A comparative study of field measurements of the pressure wave with analytical aerodynamic model for the high speed train in tunnels

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2015, v.17 no.3, pp.319-332




& (2015). A comparative study of field measurements of the pressure wave with analytical aerodynamic model for the high speed train in tunnels. (사)한국터널지하공간학회, 17(3), 319-332.
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Abstract

The pressure wave formed by the piston effects of the train proceeds within the tunnel when a train enters the tunnel with a high speed. Depending on the condition of tunnel exit, the compression waves reflect at a open end, change to the expansion waves, transfer to tunnel entrance back. Due to interference in the pressure waves and running train, passengers experience severe pressure fluctuations. And these pressure waves result in energy loss, noise, vibration, as well as in the passengers’ ears. In this study, we performed comparison between numerical analysis and field experiments about the characteristics of the pressure waves transport in tunnel that appears when the train enter a tunnel and the variation of pressure penetrating into the train staterooms according to blockage ratio of train. In addition, a comparative study was carried out with the ThermoTun program to examine the applicability of the compressible 1-D model(based on the Method of Characteristics). Furthermore examination for the adequacy of the governing equations analysis based on compressible 1-D numerical model by Baron was examined.

keywords
High-speed train, Railway tunnel, Pressure wave, Field measurement, Aerodynamics model, 고속열차, 철도터널, 압력파, 현장실험, 공기역학모델

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