A212 不足膨張衝突噴流による平板上の圧力および温度分布(OS-7&8 対流による熱伝達特性制御I)

概要

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In this paper, the flow fields of underexpanded impinging jet issued from rectangular nozzles of aspect ratio 1, 3 and 5 are numerically and experimentally studied. Two dimensional temperature and pressure distributions are measured by using infrared camera and the combination of a pressure scanning device and a stepping motion, respectively. The variation in the stagnation pressure on the impinging plate reveals that a hysteretic phenomenon exists during the pressure of increasing and decreasing the pressure ratio for the aspect ratio of 3.0 and 5.0. The comparison between the calculations and experiments is fairly good. However, the hysteresis of the pressure variations observed in the experiments between the pressure ratio of 3.5 and 4.5 cannot be confirmed in the calculations.
一般社団法人日本機械学会の論文
2005-11-02