二次元対向壁噴流の実験的研究 : 平均流特性の速度比による変化

概要

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Results of the measurement of flow properties in a two-dimensional turbulent wall jet which is injected into the turbulent boundary layer in the direction opposing the boundary layer flow are presented. The specifics of a tandem hot-wire probe manufactured in order to measure the flow in the recirculating or low-speed-flow region are first examined, and the validity of its use is confirmed. With the use of this probe, the change in the jet-reached distance from the nozzle with the velocity ratio is investigated. Measured mean velocity, fluctuating velocity and static pressure reveal the variation in the flow field with the velocity ratio. In particular, it is clarified that there exist two regimes of flow patterns. Streamlines, turbulent intensity contours and static pressure contours for two regimes are presented.
社団法人日本機械学会の論文
1993-05-25