Water entry of a superhydrophobic low-density sphere
Water entry of a superhydrophobic low-density sphere
复制标题
DOI：
10.1007/s12650-010-0054-x
复制
发表时间：
2010-11
影响因子：
1.7
通讯作者：
Y. Ueda;Masayuki Tanaka;T. Uemura;M. Iguchi
中科院分区：
文献类型：
--
作者：
Y. Ueda;Masayuki Tanaka;T. Uemura;M. Iguchi
摘要本文利用高速摄像机模拟了超疏水低密度球进入水中形成的空腔。与先前高密度球体的结果不同，低密度球体在空腔完全生长之前，在较短的深度处掐掉了产生的空腔，并且由于球体在水中的快速减速，在后表面吸引了最小的空气。因此，先前提出的关于空腔形状随时间变化的解析模型对低密度球不再有效。图形抽象
AbstractThis paper virtually demonstrates an air cavity formed by a superhydrophobic low-density sphere entering into water with the use of a high-speed camera. Unlike the previous results for a high-density sphere, the low-density sphere pinches off the resulting air cavity at the shorter depth before the cavity has fully grown, and attracts minimal air on the rear surface due to rapid deceleration of the sphere in water. The analytical model previously proposed on the time evolution of the cavity shape is thus shown to be no longer valid for the low-density sphere.Graphical Abstract