流動障害物近傍での液膜流のフローパターン

概要

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The purpose of this study is to investigate the mechanism of various flow patterns of falling liquid film flow observed near an obstacle on a flow channel. In this report, a bend on the channel was chosen as the obstacle and the behavior of a ring-shaped swelling of the liquid film, which appears near the obstacle at a low flow rate, is considered. The Weber number at which the swelling shifts from the upside to the downside of the bend is theoretically estimated. The experimental results for the swelling behavior agree well with those of the above theory. Moreover, in order to investigate the characteristics of the stationary wave observed in the upstream side of the swelling, the wavelength and the damping rate of the amplitude were measured by the needle contact method. The measured results agree with the theoretical ones which were considered by the authors in the preceding report.
一般社団法人日本機械学会の論文
1991-05-25