Wind tunnel measurements of the ICE 3 end car benchmark vehicle were carried out in accordance with prEN 14067-6:2009 during a test campaign in 2008. The vehicle was modeled in two different scales and tested in two separate wind tunnels of the DNW facilities. The test program consisted for each wind tunnel of measurements on the two ground configurations true flat ground (TFG) and single track with ballast and rail (STBR). The measured aerodynamic coefficients of the ICE 3 end car were in good agreement for both the KKK wind tunnel and the HDG wind tunnel for a range of tests with varying Reynolds numbers for each respective test configuration. In particular the data sets for each wind tunnel measurement at Reynolds number 106 were compared to test results of other wind tunnel campaigns and the determined aerodynamic coefficients matched very well. The good agreement of measured aerodynamic coefficients of the ICE 3 benchmark vehicle in several wind tunnels for both ground configurations affirmed the reproducibility of tests and test procedures of prEN 14067-6:2009. It was therefore deduced that the described wind tunnel measurements are valid as reference wind tunnel measurements. The aerodynamic coefficients of the ICE 3 end car measured in the KKK wind tunnel at Reynolds number lx106 during the reference wind tunnel measurements were introduced to prEN 14067-6:2009 as reference values. In particular, it is a requirement of the European pre-standard that the values of the lee roll moment coefficient have to be met within a given accuracy for benchmark test carried out with the ICE 3 benchmark vehicle.
Reference wind tunnel measurements on aerodynamic coefficents of ICE 3 end car
Referenzwindkanalmessungen der aerodynamischen Beiwerte des ICE 3-Schlussreisezugwagens
2009
12 Seiten, 13 Bilder, 4 Tabellen, 7 Quellen
Conference paper
English
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