Axisymmetric evolution of gravity-driven thin films on a small sphere
Axisymmetric evolution of gravity-driven thin films on a small sphere
复制标题
小球体上重力驱动薄膜的轴对称演化
DOI:
10.1017/jfm.2020.816
复制
发表时间:
2020-11
影响因子:
3.7
通讯作者:
Gao Peng
中科院分区:
文献类型:
--
作者:
Qin Jian;Xia Yu-Ting;Gao Peng
Abstract We study the axisymmetric evolution of a liquid film on a solid sphere governed by gravity, capillarity and viscous forces. The lubrication equations established in spherical coordinates are numerically solved using finite elements and local similarity solutions are obtained. Results show that the evolution behaves differently at early and late stages. At the early stage, the interface evolves in such a way that the capillary effect can be ignored. At the late stage, there emerge four zones from top to bottom: a thin film, a ridge ring, a dimple ring and a pendant drop. Each zone is governed by the balance of different forces, and hence is characterized by an individual physical mechanism. Consequently, the pendant drop is quasi-static, and the film thicknesses of other regions follow different scaling laws. The position of the dimple remains unchanged at the late stage.
登录
查看更多内容
影响因子:
4.6
作者:
Xia Yuting;Qin Jian;Gao Peng
通讯作者:
Gao Peng
影响因子:
1.6
作者:
C. Lamstaes;J. Eggers
通讯作者:
C. Lamstaes;J. Eggers
影响因子:
3.7
作者:
Stephen K. Wilson;R. Hunt;B. Duffy
通讯作者:
Stephen K. Wilson;R. Hunt;B. Duffy
影响因子:
16.6
作者:
Lee A;Brun PT;Marthelot J;Balestra G;Gallaire F;Reis PM
通讯作者:
Reis PM
影响因子:
4.6
作者:
S. Kalliadasis;Catherine Bielarz;G. Homsy
通讯作者:
S. Kalliadasis;Catherine Bielarz;G. Homsy