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Particle Image Velocimetry of the underbody flow of generic high-speed trains

Jönsson, Mattias and Wagner, Claus and Loose, Sigfried (2013) Particle Image Velocimetry of the underbody flow of generic high-speed trains. In: New Results in Numerical axperimental Fluid Mechanics VIII Notes on Numerical Fluid Mechanics and Multidisciplinary Design, Vol. 121. Springer Verlag, Heidelberg New York Dordrecht London. pp. 723-730. ISBN 978-3-642-35679-7. ISSN 1612-2909

Full text not available from this repository.

Official URL: http://link.springer.com/bookseries/4629

Abstract

Two component Particle Image Velocimetry (PIV) of the underbody flow of three different 1:50 generic high-speed train configurations hauled through a water towing tank over a smooth and a rough ground at a speed of 4 m/s (Re = 0.24 Mio) have been performed. The reference train model (RTM) consisting of 4 cars, features bogies and inter car gaps. All this features are removed for the clean train configuration (CTM), while the open train configuration (OTM) reflects all gaps but no bogies. The lowest underbody flow velocities were obtained for the CTM on the rough ground. It was found that any additional irregularity of the underfloor leads to accelerated flow regions which increase the possibility of ballast projection. The highest velocity gradients and thus aerodynamic loads on the ballast stones were obtained in the nearly fully-developed Couette-like flow underneath the third car of the RTM. Therefore it is concluded that a smooth underbody can lower the risk of ballast projection

Item URL in elib:https://elib.dlr.de/81284/
Document Type:Contribution to a Collection
Title:Particle Image Velocimetry of the underbody flow of generic high-speed trains
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jönsson, MattiasMattias.Joensson (at) dlr.deUNSPECIFIED
Wagner, Clausclaus.wagner (at) dlr.deUNSPECIFIED
Loose, SigfriedSigfried.Loose (at) dlr.deUNSPECIFIED
Date:2013
Journal or Publication Title:New Results in Numerical axperimental Fluid Mechanics VIII
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Vol. 121
DOI :10.1007/978-3-642-35680-3_86
Page Range:pp. 723-730
Editors:
EditorsEmail
Dillman, AndreasDLR
Heller, GerdAirbus Deutschland, Bremen, Germany
Kreplin, Hans-PeterDLR
Nitsche, WolfgangTU Berlin, Berlin, Germany
Peltzer, InkenBeechcraft Berlin aviation GmbH, Schönefeld, Germany
Publisher:Springer Verlag, Heidelberg New York Dordrecht London
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISSN:1612-2909
ISBN:978-3-642-35679-7
Status:Published
Keywords:Ballast projection, Train aerodynamics, Heavy vehicles, Underbody flow
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 - Projekt Next Generation Train (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Fluid Systems
Deposited By: Jönsson, Mattias
Deposited On:15 Apr 2013 15:02
Last Modified:02 Mar 2015 12:22

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