文献类型：期刊文献

英文题名：Impact Behavior of Hydrophilic Micron Particles on a Planar Gas-Liquid Interface

作者：Zhu, Shi-Jie[1];Liu, Run-Zhe[1];Wang, Tian[1];Niu, Yong-Jian[1];Lu, Hai-Feng[1];Chen, Xue-Li[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2019

卷号：35

期号：47

起止页码：15017

外文期刊名：LANGMUIR

收录：;EI(收录号：20194607690459);WOS:【SCI-EXPANDED(收录号:WOS:000500039900006)】；

基金：This work was supported by the National Key Research and Development Program of China [2017YFB0602601] and the Fundamental Research Funds for the Central Universities [222201718003].

语种：英文

外文关键词：Liquids - Magnetic bubbles - Suspensions (fluids) - Exponential functions - High speed cameras - Hydrophilicity - Phase interfaces - Viscosity

摘要：The behavior of hydrophilic micron particles impacting on the gas-liquid interface has been further experimentally studied using a high-speed camera at different surface tensions and dynamic viscosities of liquids. The results show that the impact behavior exhibits suspension and submergence modes, whose boundary cannot be clearly identified because the overlap between the impact velocity ranges occurs because of the unstable pinning of the three-phase contact line on the surface of hydrophilic particles. The liquid properties have little effect on the wettability of hydrophilic particles but greatly influence the hydrodynamic and capillary force exerted on the particles, leading to the expansion of the suspension mode range. In addition, the penetration probability changes little with the decrease in surface tension, while it significantly reduces with the increase in dynamic viscosity. A penetration probability model is predicted as an exponential function of the inertial and supporting forces, and the experimental values agree well with the predicted values. The outcomes of this research will be helpful for understanding the mechanism of particle-interface interaction and providing guidance for enhancing the separation of hydrophilic fine ash via a bubble scrubbing system.