ar X iv : p hy si cs / 0 41 11 25 v 2 2 5 N ov 2 00 4 A theoretical and numerical
نویسنده
چکیده
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 impact by means of the Smoothed Particle Hydrodynamics (SPH). Futhermore, we analyze the impact with a model of ordinal differential equation (ODE). Our simulation is in good agreement with the experiment. The analysis with the ODE model gives us a theoretical insight for the “magic angle” of stone skipping.
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تاریخ انتشار 2005