Abstract
A large moving model rig was constructed in Institute of Mechanics, Chinese Academy of Sciences in 2014 which possesses the functions such as a bidirectional operation of 1:8 scaled of three-car train model, the maximum experimental speed of 500km/h. It uses the compressed air and the eddy-current magnetic braking technique to accelerate and decelerate the train model, respectively. The rig can use for the train aerodynamic investigations of different scenes such as single-train or two trains passing by each other with Mach number similarity in open air and in tunnel et al. At present, the measurement system of tunnel pressure waves has also been established. The principle of moving model rig realization and the relative experimental results of tunnel pressure wave measurement are introduced in the paper.
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