G0500-2-5 トンネル内を走行する新幹線車両周りの圧力・流速変動の測定([G0500-2]流体工学部門一般講演(2))

概要

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Pressure and velocity fluctuations around a Shinkansen train running in a tunnel are measured simultaneously to investigate the flow structure that generates aerodynamic force on the train. In particular, a two-component hot-film probe is placed on each right and left side of the 3rd car from the head end of the 16-car outbound train (and the 14th of the inbound) to measure two-dimensional velocities in the directions parallel to the rail and perpendicular to the sides. Twenty pressure gauges are pasted not only on the right and left sides but also on the top and bottom sides of the car. It is shown that large-scale coherent structures exist on the left side of the car as well as on the top and bottom sides. Correlations between velocity and pressure fluctuations indicate that the large-scale structures are composed of rotating flows.
一般社団法人日本機械学会の論文
2010-09-04