<報文>上注ぎ造塊時のスプラッシに関する基礎的研究

概要

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The behavior of splashes produced by the collision between liquid stream and stool and between liquid stream and its pool was observed by a high speed motion picture camera. Observations were carried out mainly on water and mercury stream with respect to their laminar, turbulent and dripping stream respectively. Briefly speaking, in the case of laminar stream or quasi-laminar stream, no splashes were formed except by the initial drops ; in the case of dripping stream, many small splashes were formed, but as the liquid pool was formed gradually, the dripping stream produced many air bubbles in the pool, and small splashes were scarcely formed by the cushion-action of the air bubbles. From the experimental results obtained on water, alcohol-, glycerin-water solution and mercury stream, the quantity V'(cm^3/sec) of splashes produced by the collision of drops with the stool was expressed by the following equation : [numerical formula] where ρ is the density, μ viscosity, σ surface tension of the liquid, υ velocity of the liquid stream when the stream falls through the nozzle, d diameter of nozzle, h distance between nozzle and stream, and g the acceleration of gravity. The quantity of splashes produced by the dripping stream of liquid steel was also considered according to the above equation.
東北大学の論文
1963-10-28