光滑粒子流体力学
撞击坑
表面张力
机械
曲面(拓扑)
粒子(生态学)
喷射(流体)
地质学
材料科学
物理
几何学
热力学
数学
天文
海洋学
作者
Naoto Nishio,Kentaro Yamana,Yasutaka Yamaguchi,Takehiko Inaba,Koji Kuroda,Tadashi Nakajima,Kouhei Ohno,Hideo Fujimura
摘要
Abstract In this study, the whole process of liquid droplet impact onto a liquid surface up to the consequent formation of the central column was simulated using the smoothed particle hydrodynamics method (SPH), and compared with an experiment using a high‐speed video camera. The surface tension tensor for the particle‐based expression was adequately included as the gradient of the surface tension and that enabled the simulation leading to the formations of crater and crown as well as the consequent central column. The simulated time series of the crater depth and diameter and crown height corresponded quantitatively well with the experimental result up to the rebound motion while discrepancies remained as a lower central column height in the simulation, and this seemed to be ascribed to the difficulty in realizing the complex surface structure that inevitably appeared in the fast rebound motion. Copyright © 2009 John Wiley & Sons, Ltd.
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