Abstract
When a train runs through a tunnel, pressure variation and train draft are generated in the tunnel, and air temperature in the tunnel rises by running resistance. For the design of structures in a tunnel and for the protection of electric instruments in a tunnel, it is necessary to estimate the pressure variation, the flow velocity and the air temperature. For this purpose, we have developed a numerical simulation program for predicting the pressure variations, the flow velocity, and the air temperature in a railway tunnel. In this paper, calculation method and results of their verification by experiments are presented.
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