Forced drop swinging on vibrated and textured metal substrates

IF 1.8 4区 工程技术 Q3 ENGINEERING, CHEMICAL
Jing Xu, Dongdong Zhou, Jing Ni, Bin Li, Jiadi Lian
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引用次数: 0

Abstract

A new type of vibrated drop wettability mechanism on a micro-texture surface is proposed and investigated experimentally and theoretically. In this experiment, the mechanical testing machine is used as the vibration source, and the compound control cabinet is used to adjust the vibration liquid feeding table. By comparing the apparent dynamic contact angle, it is concluded that the surface energy of the second cycle is larger than the first one. A swing model and spring-mass system model are presented to study the vibrated drop motion pattern. The spring-mass system model is built to analyse the adhesion force working process theoretically. The drop surface energy is transmitted by vibration. With the superposition of vibration energy, the displacement of the drop gravity centre becomes larger and larger until the drop migrates. The adhesion force drives the liquid drop to do reciprocating motion, and it changes the liquid drop dynamic wettability.

在振动和有纹理的金属基材上强迫跌落摆动
提出了一种新型的微织构表面振动滴润湿机理,并对其进行了实验和理论研究。本实验采用机械试验机作为振动源,采用复合控制柜调节振动给液台。通过比较表观动态接触角,得出第二循环的表面能大于第一循环的结论。提出了摆动模型和弹簧-质量系统模型来研究振动跌落运动模式。建立了弹簧-质量系统模型,从理论上分析了粘附力的工作过程。液滴表面能量通过振动传递。随着振动能量的叠加,液滴重心的位移越来越大,直至液滴发生偏移。附着力驱动液滴做往复运动,改变液滴的动态润湿性。
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来源期刊
Lubrication Science
Lubrication Science ENGINEERING, CHEMICAL-ENGINEERING, MECHANICAL
CiteScore
3.60
自引率
10.50%
发文量
61
审稿时长
6.8 months
期刊介绍: Lubrication Science is devoted to high-quality research which notably advances fundamental and applied aspects of the science and technology related to lubrication. It publishes research articles, short communications and reviews which demonstrate novelty and cutting edge science in the field, aiming to become a key specialised venue for communicating advances in lubrication research and development. Lubrication is a diverse discipline ranging from lubrication concepts in industrial and automotive engineering, solid-state and gas lubrication, micro & nanolubrication phenomena, to lubrication in biological systems. To investigate these areas the scope of the journal encourages fundamental and application-based studies on: Synthesis, chemistry and the broader development of high-performing and environmentally adapted lubricants and additives. State of the art analytical tools and characterisation of lubricants, lubricated surfaces and interfaces. Solid lubricants, self-lubricating coatings and composites, lubricating nanoparticles. Gas lubrication. Extreme-conditions lubrication. Green-lubrication technology and lubricants. Tribochemistry and tribocorrosion of environment- and lubricant-interface interactions. Modelling of lubrication mechanisms and interface phenomena on different scales: from atomic and molecular to mezzo and structural. Modelling hydrodynamic and thin film lubrication. All lubrication related aspects of nanotribology. Surface-lubricant interface interactions and phenomena: wetting, adhesion and adsorption. Bio-lubrication, bio-lubricants and lubricated biological systems. Other novel and cutting-edge aspects of lubrication in all lubrication regimes.
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