This Website is not fully compatible with Internet Explorer.
For a more complete and secure browsing experience please consider using Microsoft Edge, Firefox, or Chrome

Pressure Fluctuations in Railway Tunnels

NAFEMS International Journal of CFD Case Studies

Volume 12, February 2020

ISSN 1462-236X
ISBN 978-1-910643-94-5


Pressure Fluctuations in Railway Tunnels

Rodríguez1, Luis Lacoma1 and Joaquín Martí1
1Principia

https://doi.org/10.59972/vjy6fz48

Keywords: Compressible Flow, Pressure Wave, Numerical Simulation, Railway, Tunnel

 


Abstract

When high-speed trains enter and exit tunnels, major pressure transients are produced, which travel in the form of waves along the tunnel and are reflected at the portals. Guidelines and regulations limit the pressure changes felt inside the cars to ensure the health and aural comfort of the passengers. The authors developed a one-dimensional program, based on the method of characteristics, to carry out the necessary calculations. After validating the program against results from other codes, including full 3-D CFD calculations, they used it to confirm the design of a tunnel for high-speed rail traffic.

References

[1] Union Internationale de Chemins de Fer (2005), UIC-779-11: Determination of Railway Tunnel Cross-Sectional Areas on the Basis of Aerodynamic Considerations, Ed. 2.

[2] Union Internationale de Chemins de Fer (2002), UIC-660: Measures to Ensure the Technical Compatibility of High-Speed Trains, Ed. 2.

[3] Adif (2011), Instrucciones Generales para los Proyectos de Plataforma (IGP). IGP-4: Túneles, version 2, June.

[4] DTR – Dundee Tunnel Research (2017), ThermoTun Software, http://www.thermotun.com/index.htm.

[5] Vardy, A.E. and Tijsseling, A.S. (2015), Method of Characteristics: (Why) is it so good?, BHR Group.

[6] Saito, S., Iida, M., Kajiyama, H., (2011), Numerical Simulation of 1-D Unsteady Compressible Flow in Railway Tunnels, Journal of Environment and Engineering, Volume 6, Issue 4, Pages 723-738, Online ISSN 1880-988X, https://doi.org/10.1299/jee.6.723

[7] SIMULIA (2017) “XFlow 2017 User’s Guide”.

Cite this paper

Javier Rodríguez, Luis Lacoma, Joaquín Martí, Pressure Fluctuations in Railway Tunnels, NAFEMS International Journal of CFD Case Studies, Volume 12, 2020, Pages 5-19, https://doi.org/10.59972/vjy6fz48

 

Document Details

ReferenceCFDJ12-1
AuthorsRodríguez. J Lacoma. L Martí. J
LanguageEnglish
TypeJournal Article
Date 2nd February 2020
OrganisationPrincipia

Download

Purchase Download

Order RefCFDJ12-1 Download
Non-member Price £5.00 | $6.38 | €6.07

Back to Previous Page