Jönsson, Mattias und Wagner, Claus und 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. Seiten 723-730. doi: 10.1007/978-3-642-35680-3_86. ISBN 978-3-642-35679-7. ISSN 1612-2909.
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Offizielle URL: http://link.springer.com/bookseries/4629
Kurzfassung
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
elib-URL des Eintrags: | https://elib.dlr.de/81284/ | ||||||||||||||||||||||||
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Dokumentart: | Beitrag im Sammelband | ||||||||||||||||||||||||
Titel: | Particle Image Velocimetry of the underbody flow of generic high-speed trains | ||||||||||||||||||||||||
Autoren: |
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Datum: | 2013 | ||||||||||||||||||||||||
Erschienen in: | New Results in Numerical axperimental Fluid Mechanics VIII | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
Band: | Vol. 121 | ||||||||||||||||||||||||
DOI: | 10.1007/978-3-642-35680-3_86 | ||||||||||||||||||||||||
Seitenbereich: | Seiten 723-730 | ||||||||||||||||||||||||
Herausgeber: |
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Verlag: | Springer Verlag, Heidelberg New York Dordrecht London | ||||||||||||||||||||||||
Name der Reihe: | Notes on Numerical Fluid Mechanics and Multidisciplinary Design | ||||||||||||||||||||||||
ISSN: | 1612-2909 | ||||||||||||||||||||||||
ISBN: | 978-3-642-35679-7 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | Ballast projection, Train aerodynamics, Heavy vehicles, Underbody flow | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||
HGF - Programm: | Verkehr | ||||||||||||||||||||||||
HGF - Programmthema: | Bodengebundener Verkehr (alt) | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Verkehr | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | V BF - Bodengebundene Fahrzeuge | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | V - Projekt Next Generation Train (alt) | ||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||||||||||||||
Hinterlegt von: | Jönsson, Mattias | ||||||||||||||||||||||||
Hinterlegt am: | 15 Apr 2013 15:02 | ||||||||||||||||||||||||
Letzte Änderung: | 02 Mär 2015 12:22 |
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