TRANSAERO — A European Initiative on Transient Aerodynamics by Dietrich Knörzer (auth.), Dr. Burkhard Schulte-Werning, Rémi

By Dietrich Knörzer (auth.), Dr. Burkhard Schulte-Werning, Rémi Grégoire, Antonio Malfatti, Gerd Matschke (eds.)

This quantity entitled comprises the implications acquired by way of a symposium which happened in Paris, France, on might 04-05, 1999 hosted through the foreign Union of Railways, UIC. This symposium was once organised in the framework of the Brite/Euram venture TRANSAERO. The TRANSAERO undertaking bundles the services of 3 railway businesses and 8 universities and learn associations in Europe to enhance the actual figuring out of the timedependent results of side-wind forces, teach passing and strain waves in tunnels. The aim used to be to discover effective and economically fulfilling suggestions to those difficulties via at the same time relating to high-speed rolling inventory, infrastructure and working conditions.

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The acceleration in x, y and z-direction was measured at the center of the leading bogie at coach floor level. This data gives an excellent measure for possible track irregularities. Additionally, the displacement between the bogie frame and two axles was measured both in lateral and vertical direction. These recordings were continuously monitored during the tests, and offer a high degree of reliability in conjunction with the force data. For the evaluation of aerodynamic coefficients only the force data was used.

10] Lienhart,H. "Wind Monitoring System for Full Scale Tests on Trains". Notes on Numerical Fluid Mechanics 79, Springer-Verlag, Berlin, 2002. [II] Matschke, G. "Side Wind Effects: Summary and Conclusion". In Notes on Numerical Fluid Mechanics 79, Springer-Verlag, Berlin, 2002. L. "Windkanaluntersuchungen zur Seitenwindbeeinflussung von ICE-Triebkopf und -Steuerwagen sowie Container auf Tragwagen". DB internal report, 1993. L.. "Ergebnisse der Modelluntersuchungen der Bundesbahn. Porsche-Windkanal".

2a: side view -it :~~ -~-~l~-~-~~ ~~- -. ~Y , ~~ ---~--~ x : tz tz x y fi~'9' 2d:IIOW ::d:ind speed fig. 2c: top ";ew v -f- ------- -- ---~;----- -- ----D) --; r3 Vw Bw ......... -V, I I ty Figure 3: Nomenclature and coordinate system in use. In the first test series with the noise barrier only the first bogie could be totally equipped with load-measuring wheelsets. No comment about the forces in the driving direction (x-direction) can be made, since the data of the vehicle power was not available.

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