Development of tunnel compression wave generator with multiple small solenoid valves

The micro-pressure wave (MPW) phenomenon caused by a high-speed train entering a tunnel consists of three stages: generation of the tunnel compression wave upon train entry, propagation of the tunnel compression wave through the tunnel, and emission of the MPW outward. Model experiments using train...

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Autores principales:	Tokuzo MIYACHI, Takakage ARAI, Shoji SAKAUE, Koji TAKASHIMA, Daiki TANIKAWA, Takuya YAGISHITA, Kento NAKATANI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2019
Materias:	high-speed train micro-pressure wave experimental facility shock tube tunnel compression wave Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/61955e739ec04488a271bcf857f6bdf7
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spelling	oai:doaj.org-article:61955e739ec04488a271bcf857f6bdf72021-11-29T05:40:47ZDevelopment of tunnel compression wave generator with multiple small solenoid valves2187-974510.1299/mej.18-00478https://doaj.org/article/61955e739ec04488a271bcf857f6bdf72019-02-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/6/2/6_18-00478/_pdf/-char/enhttps://doaj.org/toc/2187-9745The micro-pressure wave (MPW) phenomenon caused by a high-speed train entering a tunnel consists of three stages: generation of the tunnel compression wave upon train entry, propagation of the tunnel compression wave through the tunnel, and emission of the MPW outward. Model experiments using train launcher facilities (TLFs) are effective for analyzing MPWs. However, the use of those facilities to study the latter two stages, i.e., the compression wave propagation and MPW emission, is hindered by two problems: high costs required for facility operation and construction, and low data productivity. Compression wave generators can potentially provide reasonable experiments. In this study, a new, simple facility was developed for the simulation of tunnel compression waves. The proposed generator consists of small solenoid valves, a pressure chamber, compressor, power supply system, and tunnel model. The performance analyses indicate that the compression waves generated by the designed facility effectively simulate tunnel compression waves generated by train entry. The pressure rise and wavelength of the compression wave are controlled by adjusting the chamber pressure and the voltage applied to the valves. The generator is expected to provide sufficient data to develop measures against MPWs in the propagation and emission stages as it reduces the required time by over 60% compared to that required by TLFs for each generation of the compression waves.Tokuzo MIYACHITakakage ARAIShoji SAKAUEKoji TAKASHIMADaiki TANIKAWATakuya YAGISHITAKento NAKATANIThe Japan Society of Mechanical Engineersarticlehigh-speed trainmicro-pressure waveexperimental facilityshock tubetunnel compression waveMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 6, Iss 2, Pp 18-00478-18-00478 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	high-speed train micro-pressure wave experimental facility shock tube tunnel compression wave Mechanical engineering and machinery TJ1-1570
spellingShingle	high-speed train micro-pressure wave experimental facility shock tube tunnel compression wave Mechanical engineering and machinery TJ1-1570 Tokuzo MIYACHI Takakage ARAI Shoji SAKAUE Koji TAKASHIMA Daiki TANIKAWA Takuya YAGISHITA Kento NAKATANI Development of tunnel compression wave generator with multiple small solenoid valves
description	The micro-pressure wave (MPW) phenomenon caused by a high-speed train entering a tunnel consists of three stages: generation of the tunnel compression wave upon train entry, propagation of the tunnel compression wave through the tunnel, and emission of the MPW outward. Model experiments using train launcher facilities (TLFs) are effective for analyzing MPWs. However, the use of those facilities to study the latter two stages, i.e., the compression wave propagation and MPW emission, is hindered by two problems: high costs required for facility operation and construction, and low data productivity. Compression wave generators can potentially provide reasonable experiments. In this study, a new, simple facility was developed for the simulation of tunnel compression waves. The proposed generator consists of small solenoid valves, a pressure chamber, compressor, power supply system, and tunnel model. The performance analyses indicate that the compression waves generated by the designed facility effectively simulate tunnel compression waves generated by train entry. The pressure rise and wavelength of the compression wave are controlled by adjusting the chamber pressure and the voltage applied to the valves. The generator is expected to provide sufficient data to develop measures against MPWs in the propagation and emission stages as it reduces the required time by over 60% compared to that required by TLFs for each generation of the compression waves.
format	article
author	Tokuzo MIYACHI Takakage ARAI Shoji SAKAUE Koji TAKASHIMA Daiki TANIKAWA Takuya YAGISHITA Kento NAKATANI
author_facet	Tokuzo MIYACHI Takakage ARAI Shoji SAKAUE Koji TAKASHIMA Daiki TANIKAWA Takuya YAGISHITA Kento NAKATANI
author_sort	Tokuzo MIYACHI
title	Development of tunnel compression wave generator with multiple small solenoid valves
title_short	Development of tunnel compression wave generator with multiple small solenoid valves
title_full	Development of tunnel compression wave generator with multiple small solenoid valves
title_fullStr	Development of tunnel compression wave generator with multiple small solenoid valves
title_full_unstemmed	Development of tunnel compression wave generator with multiple small solenoid valves
title_sort	development of tunnel compression wave generator with multiple small solenoid valves
publisher	The Japan Society of Mechanical Engineers
publishDate	2019
url	https://doaj.org/article/61955e739ec04488a271bcf857f6bdf7
work_keys_str_mv	AT tokuzomiyachi developmentoftunnelcompressionwavegeneratorwithmultiplesmallsolenoidvalves AT takakagearai developmentoftunnelcompressionwavegeneratorwithmultiplesmallsolenoidvalves AT shojisakaue developmentoftunnelcompressionwavegeneratorwithmultiplesmallsolenoidvalves AT kojitakashima developmentoftunnelcompressionwavegeneratorwithmultiplesmallsolenoidvalves AT daikitanikawa developmentoftunnelcompressionwavegeneratorwithmultiplesmallsolenoidvalves AT takuyayagishita developmentoftunnelcompressionwavegeneratorwithmultiplesmallsolenoidvalves AT kentonakatani developmentoftunnelcompressionwavegeneratorwithmultiplesmallsolenoidvalves
_version_	1718407647714082816

Development of tunnel compression wave generator with multiple small solenoid valves

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