Summary
This paper presents an important part of the validation process of the French National Railway CFD methodology to compute complex 3D external airflows around trains. A reduced-scale test was first conducted in an open wind tunnel with a 1/7 scale TGV train set mock-up to produce a Laser Doppler Database related to the viscous turbulent air flow. Two components of the instantaneous velocity vector were measured by LDV, along the train mock-up, within the boundary layer, under the train, upstream and downstream the inter-car bogie. Then a complete Navier-Stokes calculation was run, based on this test, and the numerical results were compared with the experimental data. Comparisons were based on the mean velocity and turbulent fields. Quite good agreements were obtained and predictive actions can be today engaged to solve, by the mean of the CFD, technical problems in the field of stationary flows around trains.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
J. CLEMENTSON, A.P. GAYLARD, T. JOHNSON & R. GREGOIRE: Critical Appraisal of 5 Unstructured CFD codes applied to the flow around a single railway vehicle, ERRI, Technical Document, Draft Version, Nov. 1994, Utrecht, Netherlands.
F. MASBERNAT, Y. WOLFHUGEL, J.C. DUMAS, S. AITA, A. TABBAL, E. MESTREAU, N. MONTMAYEUR, CFD Aerodynamics of the French High-Speed Train, GEC-ALSTHOM technical review, vol. 11, jan. 1993.
T. KAIDEN, S. HOSAKA, T. MAEDE, A Validation of Numerical Simulation with Field Testing of JR Maglev Vehicle, International conference on speedup technology for railway and maglev vehicles, 1993.
E. LE DEVEHAT, P. CRESPI, R. GREGOIRE: Validation of a CFD Software for the Aerodynamics of High Speed Trains and Comparison with a Wind-Tunnel Experiment Using LDV, World Congress on Railway Research, Nov. 1994, Paris, France.
P. CRESPI, R. GREGOIRE & P. VINSON: Laser Doppler Velocimetry Measurements and Boundary Layer Survey On-board the TGV High Speed Train, World Congress on Railway Research, Nov. 1994, Paris, France.
A. KESSLER, R. GREGOIRE, P. CRESPI, Rapport d’essai de vélocimétrie laser en soufflerie sur maquette TGV-A à l’échelle 1/7, SNCF technical report, 1995.
STAR-CD Version 2.2 Manuals, Computational Dynamics Limited, 1993.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1996 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden
About this chapter
Cite this chapter
Le Devehat, E., Gregoire, R., Crespi, P., Kessler, A. (1996). Computation of the 3D turbulent Flow surrounding a high-speed train mock-up including the inter-car gap and the bogie, and comparisons with LDV data. In: Deville, M., Gavrilakis, S., Ryhming, I.L. (eds) Computation of Three-Dimensional Complex Flows. Notes on Numerical Fluid Mechanics (NNFM), vol 49. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-89838-8_19
Download citation
DOI: https://doi.org/10.1007/978-3-322-89838-8_19
Publisher Name: Vieweg+Teubner Verlag
Print ISBN: 978-3-322-89840-1
Online ISBN: 978-3-322-89838-8
eBook Packages: Springer Book Archive