Self-motion of a camphor disk coupled with convection
Self-motion of a camphor disk coupled with convection
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DOI：
10.1039/b315672a
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发表时间：
2004-05-07
影响因子：
3.3
通讯作者：
Islam, MR
中科院分区：
文献类型：
--
作者：
Kitahata, H;Hiromatsu, S;Islam, MR
从实验和理论两个方面研究了樟脑片在水中的自转运动。当樟脑圆盘沿一维水室运动时，圆盘周围出现对流，对流强度随樟脑运动速度的增加而减小。樟脑盘表现出一种取决于腔体底座形状的特征运动。通过数值模拟再现了自运动的本质，其中包括樟脑层的表面张力作为驱动力和樟脑盘周围表面张力的差异引起的Marangoni对流。
The self-motion of a camphor disk on water was investigated both experimentally and theoretically. When the camphor disk moved along a one-dimensional water chamber, a convective flow was observed around the disk and the magnitude of convection decreased with an increase in the velocity of camphor motion. The camphor disk exhibited a characteristic motion that depended on the shape of the base of the chamber. The nature of the self-motion was reproduced by a numerical simulation that included the surface tension of the camphor layer as the driving force and Marangoni convection induced by the difference in surface tension around the camphor disk.