2828 乱流遷移に起因した自由液膜の穿孔現象に関する研究

概要

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The perforation mechanism of radial liquid sheet depending on the Reynolds number is clarified. The radial liquid sheet is generated by a water discharge through a small gap formed between the end of a nozzle and the flat surface of a disk. The liquid film flow spreads radially outward on the disk, flowing from the edge of the disk into the air as a liquid sheet. Sudden laminar-turbulent transition occurs in the liquid sheet when the Reynolds number exceeds a critical value. Perforations are observed in the liquid sheet over the almost same Reynolds number and the liquid sheet is atomized at very high Reynolds number. This paper reveals that the generation rate of the perforation depend on both Reynolds number and radial position. While perforations are formed far from the transition point at relatively low Reynolds number, they are formed immediately after the transition at relatively high Reynolds number.
一般社団法人日本機械学会の論文
2000-07-31