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A Numerical Study on the Effect of Pressure Relief Ducts on the Normal Pressure in a Preliminary Design of Honam-Jeju Subsea Tunnel
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 Title & Authors
A Numerical Study on the Effect of Pressure Relief Ducts on the Normal Pressure in a Preliminary Design of Honam-Jeju Subsea Tunnel
Seo, Sangyeon; Ha, Heesang;
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 Abstract
High-speed trains have been developed widely in European countries and Japan in order to transport large quantity of people and commodities in short time. Additionally, a high speed train is one of the most desirable and environmentally friendly transportation methods. When a high speed train enters a tunnel, aerodynamic resistance is generated suddenly. This resistance causes micro pressure wave and discomfort to passengers. Due to this aerodynamic pressure against the train, a large amount of traction is required for the operation of a train in a tunnel. Therefore, it is essential to incorporate a pressure relief system in a tunnel in order to reduce aerodynamic resistance caused by a high-speed train. A pressure relief duct and a vertical shaft are representative measures in a tunnel. This study represents the effect of pressure relief ducts in order to alleviate positive and negative normal pressures acting on a train. One-dimensional numerical simulations were carried out in order to estimate the effect of pressure relief systems.
 Keywords
High-speed train;Air pressure in a tunnel;One-dimensional numerical analysis;Pressure relief duct;Positive and negative pressure;
 Language
Korean
 Cited by
1.
공기 압력 제어 덕트를 이용한 철도 터널 내 공기 압력 저감에 대한 수치해석 연구,서상연;하희상;이상필;

터널과지하공간, 2016. vol.26. 5, pp.375-383 crossref(new window)
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