Yundong Han1, Dawei Chen1, Shaoqing Liu1, Gang Xu2
FDMP-Fluid Dynamics & Materials Processing, Vol.16, No.1, pp. 1-19, 2020, DOI:10.32604/fdmp.2020.06525
Abstract A series of tests have been conducted using a Cryogenic Wind Tunnel to study
the effect of Reynolds number (Re) on the aerodynamic force and surface pressure
experienced by a high speed train. The test Reynolds number has been varied from 1
million to 10 million, which is the highest Reynolds number a wind tunnel has ever
achieved for a train test. According to our results, the drag coefficient of the leading car
decreases with higher Reynolds number for yaw angles up to 30º. The drag force
coefficient drops about 0.06 when Re is raised from 1 million to 10… More >
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