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Droplet generation during spray impact onto a downward-facing solid surface

下向き固体面へのスプレイ流衝突による液滴生成

Zhan, Y.*; Sun, G.*; 大川 富雄*; 青柳 光裕 ; 高田 孝 

Zhan, Y.*; Sun, G.*; Okawa, Tomio*; Aoyagi, Mitsuhiro; Takata, Takashi

Experiments were conducted to explore the droplet generation process when an ascending liquid spray impacts on a downward-facing solid surface. The droplets generated in the present experiments were classified into the two types: one is the splashing droplets generated by the impacts of droplets in spray and the other is the falling droplets produced from a liquid film formed on the solid surface. The falling droplets were further classified to the first falling droplets and the satellite droplets. It was found that the ratio of the splashing droplets increases with an increase in the impact Weber number. The size of the splashing droplets was in the same order with the impacting droplets in spray. On the other hand, the size of the falling droplets was inversely proportional to their order. Using the experimental data, dimensionless correlations were developed for the rates and sizes of the splashing and falling droplets.

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パーセンタイル:0.02

分野:Thermodynamics

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