CONDITION FOR OCCURENCE OF CIRCULAR PENETRATION DURING IMPACT OF A FALLING DROPLET WITH A FLUID
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摘要:
在自由落下的液滴与液面碰撞的实验中,蔡一坤发现环形穿入现象,它的出现与下落高度之间有某种周期性关系,蔡文根据实验结果整理出了经验公式,本文从液滴的自由振动出发,得到了与实验结果符合得更好的公式,从而为环形穿入提供了理论解释。
Abstract:In observing the impact of a free falling droplet with a fluid, Cai discovered what he called the circular penetration phenomenon, whose occurence had a periodic dependence on the height of free fall. Empirical formulas were developed by Cai to correlate his experimental measurements. This note shows that formulas in better agreement with experiment can be derived from the theory of free oscillation of droplets, thus providing a physical basis for circular penetration.
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Key words:
- droplet /
- impact /
- penetration
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