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Wind tunnel experiments with a high speed train model under crosswind conditions

Haff, Johannes and Richard, Hugues and Fey, Uwe and Kowalski, Thomas and Loose, Sigfried and Wagner, Claus (2012) Wind tunnel experiments with a high speed train model under crosswind conditions. Civil-Comp Proceedings: 98. Railways 2012: The First International Conference on Railway Technology: Research, Development and Maintenance, 18.-20. Apr. 2012, Las Palmas de Gran Canaria, Spanien. DOI: 10.4203/ccp.98.161. ISBN 978-1-905088-52-2 CD-ROM. ISSN 1759-3433

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Abstract

Cross wind stability is one of the most relevant safety topics for the development of modern high-speed trains. New materials and better construction principles reduce the weight of train cars. Combining double deck configurations with an increased cross-sectional area which are developed to increase passenger capacities with higher operational speeds, the effect of cross winds on the driving dynamic behaviour of the train increases dramatically. Wind tunnel experiments were performed in the Side Wind Test Facility Göttingen (SWG) and the Cryogenic Wind Tunnel Cologne (KKK). The measurements in SWG were performed to study the leeward velocity field of the NGT2 double deck high-speed train under cross wind conditions with particle image velocimetry (PIV) and its influence on the induced aerodynamic loads with force measurements at Reynolds numbers of up to 4.00E+05. For detailed investigations of the Reynolds number effects on the aerodynamic loads the configurations used in the SWG were also used in the KKK with the same test setup up to Reynolds numbers of 7.50E+05. The KKK has the option to increase the Reynolds number by a factor of up to 5.5 by reducing the gas temperature using liquid nitrogen and to vary both Reynolds number and Mach number independently.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:ISBN: 978-1-901088-51-5 Book ISBN: 978-1-905088-53-9 Set CCP: 98 Abstracts
Title:Wind tunnel experiments with a high speed train model under crosswind conditions
Authors:
AuthorsInstitution or Email of Authors
Haff, JohannesJohannes.Haff@dlr.de
Richard, HuguesHugues.Richard@dlr.de
Fey, UweUwe.Fey@dlr.de
Kowalski, ThomasThomas.Kowalski@dlr.de
Loose, SigfriedSigfried.Loose@dlr.de
Wagner, ClausClaus.Wagner@dlr.de
Date:2012
Refereed publication:No
In ISI Web of Science:No
Volume:Procee
DOI:10.4203/ccp.98.161
Editors:
EditorsEmail
Pombo, JoaoUNSPECIFIED
Muylle, JelleUNSPECIFIED
Tabor, JaneUNSPECIFIED
Brodie, RosemaryUNSPECIFIED
Publisher:Civil-Comp Proceedings: 98
Series Name:Civil-Comp Proceedings: 98
ISSN:1759-3433
ISBN:978-1-905088-52-2 CD-ROM
Status:Published
Keywords:Crosswind stability, high speed train aerodynamics, wind tunnel experiment, particle image velocimetry, laser doppler anemometry, force measurement
Event Title:Railways 2012: The First International Conference on Railway Technology: Research, Development and Maintenance
Event Location:Las Palmas de Gran Canaria, Spanien
Event Type:international Conference
Event Dates:18.-20. Apr. 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - Next Generation Train (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Johannes Haff
Deposited On:21 May 2012 11:50
Last Modified:12 Dec 2013 21:23

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