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Pressure-loads in high-speed tunnels: Study of the pressure loads on safety doors in high-speed tunnels using model scale experiments and numerical simulations

Heine, Daniela and Rudolph, Michael and Kühnelt, Helmut and Lachinger, Stefan and Vorwagner, Alois and Ehrenfried, Klaus and Saliger, Florian (2018) Pressure-loads in high-speed tunnels: Study of the pressure loads on safety doors in high-speed tunnels using model scale experiments and numerical simulations. In: Rail Aerodynamics and Train Design 2018. Rail Aerodynamics and Train Design 2018, 31. Jan. - 01. Feb. 2018, Berin, Deutschland.

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Official URL: https://www.ifv-bahntechnik.de/aerodynamics/

Abstract

1. General problem: Pressure waves in railway tunnels may lead to high loads on installations inside of the tunnel. Discussed will be the influence of the shape and size of the cavity around a safety door on the pressure gradients and loads the door inside a high-speed railway tunnels. 2. Experimental study: Using a moving-model rig, the influence of the geometries of train and tunnel was investigated. The pressure at 20 different positions along the 10-14m long tunnel is measured, as well as the pressure at the four edges of a generic safety door. 4 different surroundings of the door were studied. 3. Numerical study and comparison: Pressure waves and therefore loads on installations were studied using 1D- and 3D-CFD. For comparison purposes, the geometries of train and tunnel used in the experimental study were analysed numerical. Some additional configurations like a very long tunnel, which was not be able to be studied experimentally, was considered. At least, the experimental and numerical results are compared resulting in a quite good agreement. Enlarging the cavity in the leads to a further increase in the pressure loads because of several reflections of the waves inside of this cavity.

Item URL in elib:https://elib.dlr.de/119040/
Document Type:Conference or Workshop Item (Speech)
Additional Information:http://www.railway-network.eu/aerodynamics/brochure.pdf
Title:Pressure-loads in high-speed tunnels: Study of the pressure loads on safety doors in high-speed tunnels using model scale experiments and numerical simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heine, DanielaDaniela.Heine (at) dlr.deUNSPECIFIED
Rudolph, MichaelAustrian Institute of Technology, Department Mobility, Giefinggasse 2, 1210 Vienna, AustriaUNSPECIFIED
Kühnelt, HelmutAustrian Institute of Technology, Department Mobility, Giefinggasse 2, 1210 Vienna, AustriaUNSPECIFIED
Lachinger, StefanAustrian Institute of Technology, Department Mobility, Giefinggasse 2, 1210 Vienna, AustriaUNSPECIFIED
Vorwagner, AloisAustrian Institute of Technology, Department Mobility, Giefinggasse 2, 1210 Vienna, AustriaUNSPECIFIED
Ehrenfried, KlausKlaus.Ehrenfried (at) dlr.deUNSPECIFIED
Saliger, FlorianÖBB-Infrastruktur AG, Praterstern 3, 1020 Vienna, AustriaUNSPECIFIED
Date:2018
Journal or Publication Title:Rail Aerodynamics and Train Design 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:pressure waves in railway tunnels, loads on safety doors, tunnel-simulation facility, CFD analysis
Event Title:Rail Aerodynamics and Train Design 2018
Event Location:Berin, Deutschland
Event Type:international Conference
Event Dates:31. Jan. - 01. Feb. 2018
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 > Fluid Systems, GO
Deposited By: Bachmann, Barbara
Deposited On:13 Apr 2018 13:15
Last Modified:13 Apr 2018 13:15

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