Summary
This paper presents an overview of the aerodynamics studies which have been carried out through the Work Package 3 of the European research project TRANSAERO (Transient Aerodynamics for Railway system Optimisation). This work package was dedicated to the investigation of the trains passing situations, both in open air and tunnel conditions. The trains passing issues are presented as well as the organisation which was designed to answer them.
Different complementary techniques were used, such as (i) full-scale tests on the Diretissima line, Italy, involving two ETR 500/92 high-speed trainsets and one freight train, (ii) 1/25 scale tests with the Moving Model Rig (MMR) installed in Derby, UK, and (iii) various Computational Fluid Dynamics (CFD) tools. These techniques are shortly presented and the main results are summarised, including some demonstrative comparisons. Among others, the effects of the track spacing increase and train nose lengthening are emphasised.
The interest of validated CFD tools is also clearly shown through an investigation relative to three different European high-speed trains passing each other in “Interoperability” conditions. Finally, some conclusions are drawn as well as some perspectives about the use and development of this work.
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References
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Gregoire, R. (2002). Transaero Work Package 3: Trains Passing Effects — Summary and Conclusions. In: Schulte-Werning, B., Grégoire, R., Malfatti, A., Matschke, G. (eds) TRANSAERO — A European Initiative on Transient Aerodynamics for Railway System Optimisation. Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM), vol 79. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-45854-8_14
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