Summary Generation of the compression wave by a train entering a tunnel is investigated by model experiments. In the model experiments, the train and the tunnel are represented by an axisymmetric model, a three-dimensional mirror image model and a three-dimensional model. The experimental results indicate that the effect of the three-dimensionality of the train nose shape is approximately 2 % for the pressure gradient of the compression wavefront when the train nose is streamlined, hence without large flow separation around the train nose. Furthermore, the relationship between the pressure gradient of the compression wavefront and the train position in a cross-section at the tunnel portal is clarified.
Model Experiments on the Tunnel Compression Wave Using an Axisymmetric and Three-Dimensional Train Model
2012-01-01
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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