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Influence of the shape and size of cavities on pressure waves inside high-speed railway tunnels

Heine, Daniela and Ehrenfried, Klaus and Kühnelt, Helmut and Lachinger, Stefan and Rudolph, Michael and Vorwagner, Alois and Saliger, Florian (2019) Influence of the shape and size of cavities on pressure waves inside high-speed railway tunnels. Journal of Wind Engineering and Industrial Aerodynamics, 189, pp. 258-265. Elsevier. doi: 10.1016/j.jweia.2019.03.032. ISSN 0167-6105.

Full text not available from this repository.

Official URL: https://www.sciencedirect.com/science/article/pii/S0167610518307591?via%3Dihub

Abstract

For safety reasons, most newly built tunnels are designed as twin-tube tunnels with interconnecting tubes. With these interconnections it is possible to rescue passengers inside of one tunnel tube through the other tube in case of an emergency. The interconnections are closed towards the tunnel with safety doors. These doors have to withstand high pressure loads caused by passing pressure waves and can even be damaged because of the waves. The doors are installed in niches which are embedded in the tunnel walls. The influence of the geometry and size of these cavities on the pressure waves and consequently the loads on the doors was studied by means of moving-model rig experiments at the Tunnel Simulation Facility Göttingen. Different tunnel cross-sectional areas, cavity configurations, train geometries and velocities were examined regarding the loads on a generic door. Furthermore, numerical simulations were performed in order to extend the parameter range, e.g. the tunnel length, and to compare with the experimental results. Although the niches were assumed to reduce the pressure loads on the door, it was found that the pressure at the doors and therefore the loads were increased. The reason for this increase were additional pressure waves generated when the train passes the ends of the cavity and which superpose with the initial, scattered waves leading to high pressure amplitudes.

Item URL in elib:https://elib.dlr.de/121972/
Document Type:Article
Title:Influence of the shape and size of cavities on pressure waves inside high-speed railway tunnels
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Heine, DanielaDaniela.Heine (at) dlr.deUNSPECIFIED
Ehrenfried, KlausKlaus.Ehrenfried (at) dlr.deUNSPECIFIED
Kühnelt, HelmutAustrian Institute of Technology, Department Mobility, Giefinggasse 2, 1210 Vienna, AustriaUNSPECIFIED
Lachinger, StefanAustrian Institute of Technology, Department Mobility, Giefinggasse 2, 1210 Vienna, AustriaUNSPECIFIED
Rudolph, MichaelAustrian Institute of Technology, Department Mobility, Giefinggasse 2, 1210 Vienna, AustriaUNSPECIFIED
Vorwagner, AloisAustrian Institute of Technology, Department Mobility, Giefinggasse 2, 1210 Vienna, AustriaUNSPECIFIED
Saliger, FlorianÖBB-Infrastruktur AG, Praterstern 3, 1020 Vienna, AustriaUNSPECIFIED
Date:15 April 2019
Journal or Publication Title:Journal of Wind Engineering and Industrial Aerodynamics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:189
DOI :10.1016/j.jweia.2019.03.032
Page Range:pp. 258-265
Editors:
EditorsEmailEditor's ORCID iD
Stathopoulos, TedElsevierUNSPECIFIED
Publisher:Elsevier
ISSN:0167-6105
Status:Published
Keywords:tunnel aerodynamics, pressure waves, high-speed trains, safety doors, tunnel cavity
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train III (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Deposited By: Heine, Daniela
Deposited On:05 Jun 2019 15:45
Last Modified:05 Nov 2020 13:26

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