Influence of Embankments with Parapets on the Cross-Wind Turbulence Intensity at the Contact Wire of Railway Overheads

Avila Sanchez, Sergio and López García, Oscar and Meseguer Ruiz, José (2010). Influence of Embankments with Parapets on the Cross-Wind Turbulence Intensity at the Contact Wire of Railway Overheads. In: "Joint Rail Conference JRC2010", 27/04/2010 - 29/04/2010, Urbana, EEUU. ISBN 978-0-7918-4907-1. https://doi.org/10.1115/JRC2010-36207.

Description

Title: Influence of Embankments with Parapets on the Cross-Wind Turbulence Intensity at the Contact Wire of Railway Overheads
Author/s:
  • Avila Sanchez, Sergio
  • López García, Oscar
  • Meseguer Ruiz, José
Item Type: Presentation at Congress or Conference (Article)
Event Title: Joint Rail Conference JRC2010
Event Dates: 27/04/2010 - 29/04/2010
Event Location: Urbana, EEUU
Title of Book: Proceedings of the Joint Rail Conference, JRC2010
Date: 2010
ISBN: 978-0-7918-4907-1
Volume: 2
Subjects:
Freetext Keywords: catenary instabilities, wind tunnel tests, train aerodynamics
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Vehículos Aeroespaciales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Winds as an environmental factor can cause significant difficulties for the railway system operation. The railway overhead has been particularly vulnerable to cross-winds related problems, such as development of undamped oscillations due to galloping phenomenon. The installation of windbreaks to decrease the aerodynamic loads on the train can affect the loads on railway overheads triggering cable galloping. One essential parameter to indicate the influence of the parapet wake on the catenary contact wire is the turbulence intensity. In this paper the results of an experimental analysis of the turbulence intensity due to the presence of parapets carried out in a wind tunnel are reported. Embankments equipped with different parapets have been tested and turbulence intensity has been measured at both contact wire locations, windward and leeward. The relative influence of the parapets is measured through a reduced turbulence intensity, defined as the ratio between the turbulence intensity measured with parapet and the turbulence intensity in the case without any parapet on the embankment. In general the reduced turbulence intensity increases as the height of the parapet increases.

More information

Item ID: 6949
DC Identifier: http://oa.upm.es/6949/
OAI Identifier: oai:oa.upm.es:6949
DOI: 10.1115/JRC2010-36207
Deposited by: Memoria Investigacion
Deposited on: 10 May 2011 08:47
Last Modified: 20 Apr 2016 16:03
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