Author:
Zhong Xing-Guo,Liu Yang-Sha,Yao Yi-Chen,He Bing,Wen Bing-Hai
Abstract
Abstract
Contact angle is an essential parameter to indicate substrate wettability. The measurement of contact angle in experiments and simulations is a complex and time-consuming work. In this paper, we propose an improved measuring method of contact angle in multiphase lattice Boltzmann simulations, which can accurately obtain the real-time contact angle at low temperatures and larger density ratios. The three-phase contact point is determined by an extrapolation, and its position is not affected by the local deformation of flow field at the three-phase contact region. A series of simulations confirm that the present method has high accuracy and gird-independence. The contact angle keeps an excellent linear relationship with the chemical potential of the surface, so that it is very convenient to specify the wettability of a surface. The real-time contact angle measurement enables us to obtain the dynamic contact angle hysteresis on chemically heterogeneous surfaces, while the mechanical analyses can be effectively implemented at the moving contact line.
Subject
General Physics and Astronomy
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献