Simple numerical calculation method of flow velocity on roof of train running in tunnel

A pantograph mounted on a high-speed train roof is exposed to high-speed air flow while traveling, and lift force is generated in the pantograph. To ensure high current collecting performance of the pantograph, it is important to appropriately adjust the lift force generated in the pantograph. The f...

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Autores principales:	Katsuhiro KIKUCHI, Yuhei NOGUCHI, Koji NAKADE, Shinya MASHIMO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2018
Materias:	train tunnel pantograph train roof flow simple calculation method Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/bd09445ce0fc4f5ba7ebfb6d9e7e1a64
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id	oai:doaj.org-article:bd09445ce0fc4f5ba7ebfb6d9e7e1a64
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spelling	oai:doaj.org-article:bd09445ce0fc4f5ba7ebfb6d9e7e1a642021-11-26T07:20:10ZSimple numerical calculation method of flow velocity on roof of train running in tunnel2187-974510.1299/mej.17-00545https://doaj.org/article/bd09445ce0fc4f5ba7ebfb6d9e7e1a642018-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/5/3/5_17-00545/_pdf/-char/enhttps://doaj.org/toc/2187-9745A pantograph mounted on a high-speed train roof is exposed to high-speed air flow while traveling, and lift force is generated in the pantograph. To ensure high current collecting performance of the pantograph, it is important to appropriately adjust the lift force generated in the pantograph. The flow velocity along the roof of a train has a significant influence on the lift force. In this study, we proposed a simple calculation method that enabled us to easily calculate the flow on the train roof in a tunnel using a personal computer. To validate the effectiveness of the proposed method, model experiments were carried out and calculation and experimental results were compared. Furthermore, the influence of hydraulic friction coefficients on train roof flow velocity was examined using the proposed method, which was not time consuming.Katsuhiro KIKUCHIYuhei NOGUCHIKoji NAKADEShinya MASHIMOThe Japan Society of Mechanical Engineersarticletraintunnelpantographtrain roof flowsimple calculation methodMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 5, Iss 3, Pp 17-00545-17-00545 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	train tunnel pantograph train roof flow simple calculation method Mechanical engineering and machinery TJ1-1570
spellingShingle	train tunnel pantograph train roof flow simple calculation method Mechanical engineering and machinery TJ1-1570 Katsuhiro KIKUCHI Yuhei NOGUCHI Koji NAKADE Shinya MASHIMO Simple numerical calculation method of flow velocity on roof of train running in tunnel
description	A pantograph mounted on a high-speed train roof is exposed to high-speed air flow while traveling, and lift force is generated in the pantograph. To ensure high current collecting performance of the pantograph, it is important to appropriately adjust the lift force generated in the pantograph. The flow velocity along the roof of a train has a significant influence on the lift force. In this study, we proposed a simple calculation method that enabled us to easily calculate the flow on the train roof in a tunnel using a personal computer. To validate the effectiveness of the proposed method, model experiments were carried out and calculation and experimental results were compared. Furthermore, the influence of hydraulic friction coefficients on train roof flow velocity was examined using the proposed method, which was not time consuming.
format	article
author	Katsuhiro KIKUCHI Yuhei NOGUCHI Koji NAKADE Shinya MASHIMO
author_facet	Katsuhiro KIKUCHI Yuhei NOGUCHI Koji NAKADE Shinya MASHIMO
author_sort	Katsuhiro KIKUCHI
title	Simple numerical calculation method of flow velocity on roof of train running in tunnel
title_short	Simple numerical calculation method of flow velocity on roof of train running in tunnel
title_full	Simple numerical calculation method of flow velocity on roof of train running in tunnel
title_fullStr	Simple numerical calculation method of flow velocity on roof of train running in tunnel
title_full_unstemmed	Simple numerical calculation method of flow velocity on roof of train running in tunnel
title_sort	simple numerical calculation method of flow velocity on roof of train running in tunnel
publisher	The Japan Society of Mechanical Engineers
publishDate	2018
url	https://doaj.org/article/bd09445ce0fc4f5ba7ebfb6d9e7e1a64
work_keys_str_mv	AT katsuhirokikuchi simplenumericalcalculationmethodofflowvelocityonroofoftrainrunningintunnel AT yuheinoguchi simplenumericalcalculationmethodofflowvelocityonroofoftrainrunningintunnel AT kojinakade simplenumericalcalculationmethodofflowvelocityonroofoftrainrunningintunnel AT shinyamashimo simplenumericalcalculationmethodofflowvelocityonroofoftrainrunningintunnel
_version_	1718409679876390912

Simple numerical calculation method of flow velocity on roof of train running in tunnel

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