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Numerical Investigation of Time-Dependent Cross-Wind Effects on an Idealised Leading Rail Car
Schiffer, Stefanie and Wagner, Claus (2012) Numerical Investigation of Time-Dependent Cross-Wind Effects on an Idealised Leading Rail Car. Civil-Comp Press and Saxe-Coburg Publications. 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.98.164. ISBN 978-1-905088-52-2 CD-ROM. ISSN 1759-3433
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Official URL: http://www.civil-comp.com/
Abstract
For the optimization of modern high-speed trains it is essential to fully understand the physics of the instantaneous and time-averaged flow around the train body. Hence for the study presented here large eddy simulations (LES) have been performed to investigate the flow around a simplified train model. For subgrid-scale modelling the Smagorinsky model in combination with van Driest damping were used. Simulations were conducted for a Reynolds number of 2 x 10^5, based on the free stream velocity and the train width. It is shown that the LES technique is capable of providing details of the instantaneous flow field which can not be predicted in Reynolds-averaged Navier-Stokes (RANS) simulations.
| Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||
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| Additional Information: | ISBN: 978-1-901088-51-5 Book, ISBN: 978-1-905088-53-9 Set, CCP: 98 Abstracts | ||||||
| Title: | Numerical Investigation of Time-Dependent Cross-Wind Effects on an Idealised Leading Rail Car | ||||||
| Authors: |
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| Date: | April 2012 | ||||||
| Refereed publication: | No | ||||||
| In Open Access: | Yes | ||||||
| In SCOPUS: | No | ||||||
| In ISI Web of Science: | No | ||||||
| Volume: | Proceedings of the First International Conference on Railway Technology: Research, Development and Maintenance | ||||||
| DOI: | 10.4203/ccp.98.164 | ||||||
| Editors: |
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| Publisher: | Civil-Comp Press and Saxe-Coburg Publications | ||||||
| Series Name: | Civil-Comp Proceedings: 98 | ||||||
| ISSN: | 1759-3433 | ||||||
| ISBN: | 978-1-905088-52-2 CD-ROM | ||||||
| Status: | Published | ||||||
| Keywords: | large eddy simulation, train aerodynamics, wake structures, cross-wind, subgrid-scale model, bluff body | ||||||
| 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: | V BF - Bodengebundene Fahrzeuge | ||||||
| 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: | Stefanie Schiffer | ||||||
| Deposited On: | 02 May 2012 14:49 | ||||||
| Last Modified: | 21 May 2012 13:38 |
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