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An experimental study of non-spinning stone-skipping process
Experimental Thermal and Fluid Science ( IF 3.2 ) Pub Date : 2020-12-19 , DOI: 10.1016/j.expthermflusci.2020.110319
Hsuan-Wei Tsai , Wen-Fang Wu , Chun-Liang Lai

The process of throwing a small aluminum circular disk toward the water surface to simulate the stone-skipping phenomenon is experimentally observed and analyzed in this paper. Four stages consisting of pre-hitting, hitting, sliding, and aft-sliding stages for a single skipping process are proposed for a thorough analysis and better understanding of the fundamental physical mechanism of the stone-skipping phenomenon. It is found through this study that, if spinning is not allowed, it is hardly possible to generate the stone-skipping phenomenon when the initial inclined angle of throwing is greater than 8°. Moreover, the maximum number of skips is less than that when spinning is allowed. For larger initial inclined angles of throwing, water walking with or without lateral roll are observed, which is quite different from the stone-skipping phenomena usually observed.



中文翻译:

非旋转跳石过程的实验研究

通过实验观察和分析了向水面投掷一个小的铝圆盘以模拟跳石现象的过程。为全面分析和更好地理解跳石现象的基本物理机制,提出了一个跳跃过程的四个阶段,包括预击球,击球,滑行和后滑阶段。通过该研究发现,如果不允许旋转,则当初始投掷倾斜角大于8°时,几乎不可能产生跳石现象。此外,最大跳数少于允许旋转时的跳数。对于较大的初始投掷倾斜角,观察到有或没有侧向滚动的水流,

更新日期:2020-12-28
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