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N. Paradot¹, E. Allain², R. Croué², X. De La Casa³ and J. Pauline³

¹Rolling Stock Department, SNCF, Paris, France
²Rolling Stock Engineering Centre, SNCF, Le Mans, France
³ALTRAN Aerospace & Defence, Velizy-Villacoublay, France

doi:10.4203/ccp.104.34

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, "Development of a Numerical Modelling of Snow Accumulation on a High Speed Train", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 34, 2014. doi:10.4203/ccp.104.34

Keywords: snow accumulation, aerodynamics, climatic wind tunnel, computational fluid dynamics, high speed train, TGV.

Summary

The French National Railway Company (SNCF) has led investigations on snow accretion phenomenon to reduce snow accumulations on a train's undercarriage. Wind tunnel experiments have been conducted to collect data on snow behaviour around a half scale railway mock-up and various prism shapes. The analysis of experimental results on prisms allowed the construction of a probability law for particle trapping on walls, in respect of the impact angle. The development of an Euler-Lagrange numerical method, combined with adapted mathematical laws (fitted with experimental results), led to a large calculation taking into account a whole TGV Duplex trainset at normal cruising speed. A methodology has been developed to make it possible using particle seeding by suspension from the ground and domain division processes for the fluid flow and particle trajectories. The method was then used to perform parametric studies and a mesh morphing tool was set to allow volume description of snow accretion.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 34 Development of a Numerical Modelling of Snow Accumulation on a High Speed Train N. Paradot¹, E. Allain², R. Croué², X. De La Casa³ and J. Pauline³ ¹Rolling Stock Department, SNCF, Paris, France ²Rolling Stock Engineering Centre, SNCF, Le Mans, France ³ALTRAN Aerospace & Defence, Velizy-Villacoublay, France doi:10.4203/ccp.104.34 purchase the full-text of this paper Full Bibliographic Reference for this paper , "Development of a Numerical Modelling of Snow Accumulation on a High Speed Train", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 34, 2014. doi:10.4203/ccp.104.34 Keywords: snow accumulation, aerodynamics, climatic wind tunnel, computational fluid dynamics, high speed train, TGV. Summary The French National Railway Company (SNCF) has led investigations on snow accretion phenomenon to reduce snow accumulations on a train's undercarriage. Wind tunnel experiments have been conducted to collect data on snow behaviour around a half scale railway mock-up and various prism shapes. The analysis of experimental results on prisms allowed the construction of a probability law for particle trapping on walls, in respect of the impact angle. The development of an Euler-Lagrange numerical method, combined with adapted mathematical laws (fitted with experimental results), led to a large calculation taking into account a whole TGV Duplex trainset at normal cruising speed. A methodology has been developed to make it possible using particle seeding by suspension from the ground and domain division processes for the fluid flow and particle trajectories. The method was then used to perform parametric studies and a mesh morphing tool was set to allow volume description of snow accretion. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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