Shape of a sliding capillary contact due to the hysteresis of contact angle: theory and experiment

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Title	Shape of a sliding capillary contact due to the hysteresis of contact angle: theory and experiment
Authors	Popov, V.L. Liashenko, Yakiv Oleksandrovych Starcevic, J.
ORCID	http://orcid.org/0000-0001-7511-3163
Keywords	Capillarity Contact Angle Hysteresis Friction Contact Area Roughness
Type	Article
Date of Issue	2021
URI	https://essuir.sumdu.edu.ua/handle/123456789/85371
Publisher	University of Niš, Serbia
License	Creative Commons Attribution - NoDerivatives 4.0 International
Citation	Shape of a Sliding Capillary Contact due to the Hysteresis of Contact Angle: Theory and Experiment / V. L. Popov, I. A. Lyashenko, J. Starcevic // Facta Universitatis. Series: Mechanical Engineering. — 2021. — Vol. 19, No 2. — P. 175-185.
Abstract	We consider a classical problem of a capillary neck between a parabolic body and a plane with a small amount of liquid in between. In the state of thermodynamic equilibrium, the contact area between the bodies and the liquid layer has a circular shape. However, if the bodies are forced to slowly move in the tangential direction, the shape will change due to the hysteresis of the contact angle. We discuss the form of the contact area under two limiting assumptions about the friction law in the boundary line. We also present a detailed experimental study of the shape of sliding capillary contact in dependence on the roughness of the contacting surfaces.
Appears in Collections:	Наукові видання (ЕлІТ)