Theoretical and numerical approach to "magic angle" of stone skipping.
نویسندگان
چکیده
We investigate the condition for the bounce of circular disks which obliquely impacts on the fluid surface. An experiment [C. Clanet, F. Hersen, and L. Bocquet, Nature (London) 427, 29 (2004)] revealed that there exists a "magic angle" of 20 degrees between a disk's face and water surface in which the condition of the lowest impact speed necessary for a bounce is minimized. We perform a three-dimensional simulation of the disk-water impact by means of the smoothed particle hydrodynamics. Furthermore, we analyze the impact with a model of the ordinary differential equation (ODE). Our simulation is in good agreement with the experiment. The analysis with the ODE model gives us a theoretical insight into the "magic angle" of stone skipping.
منابع مشابه
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We investigate the condition for the bounce of circular disks which obliquely impacts on fluid surface. An experiment [ Clanet, C., Hersen, F. and Bocquet, L., Nature 427, 29 (2004) ] revealed that there exists a “magic angle” of 20◦ between a disk’s face and water surface in which condition the required speed for bounce is minimized. We perform three-dimensional simulation of the diskwater imp...
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عنوان ژورنال:
- Physical review letters
دوره 94 17 شماره
صفحات -
تاریخ انتشار 2005