Experimental and Numerical Investigation of Waterdrop Impact on Cantilever-Style Substrates
The phenomenon that waterdrop impacts the elastic substrates exists widely in nature and industry.For example, raindrop impacts plant leaves.In this paper, an experimental apparatus is designed to investigate the phenomenon that waterdrop impacts cantilever plate.Both hydrophobic and hydrophilic surfaces are considered.High-speed camera is used to capture the dynamic process of waterdrop impact.We compared the max deformation of waterdrops and beams between results of hydrophobic and hydrophilic surfaces.It shows that the waterdrop morphologies and beam deflections are influenced by the wetting ability of the substrate.In additions, a fluid structure interaction model based on smoothed particle hydrodynamics method is developed for further revealing the highly dynamic impact behaviors.The surface tension effect is taken into account in the model, and the process of waterdrop impact is analyzed from the view of system energy.The research in this paper opens up a new research perspective for the physics of drop impact, and also provides an effective numerical method for the future application.
Waterdrop impact experiment Elastic substrates Cantilever beams Maximum deformation of the droplet Fluid-structure interaction model
Xiao-ping HUANG Xiang-wei DONG Jie MA
Department of Engineering Mechanics, College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao 266580, China
国际会议
上海
英文
262-268
2018-04-15（万方平台首次上网日期，不代表论文的发表时间）