Reducing Friction with a Liquid Film on the Body Surface
AbstractA flow of a thin layer of liquid is simulated on a flat surface of a body located in a stream of air. Liquid film on the surface of the body reduces frictional resistance and can be used as a boundary layer control element. The paper presents a mathematical model of the film flow on a half-plane, located at an angle to the horizon. The fluid flow is determined by the force of gravity and friction from the external air current. A model of an incompressible viscous fluid is used in the boundary-layer approximation. The terms of the motion equation are averaged over the film thickness according to the Leibniz rule. In the cross section of the film, a quadratic law is adopted for the distribution of the longitudinal velocity, taking into account friction on the film surface. An analytical solution of the problem is obtained in the form of series in powers of the small parameter for determining the film thickness and the average longitudinal velocity along the length of the plate. It is shown that the friction decreases with flow around a half-plane with a film of liquid on the surface. View Full-Text
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Klyuev, N.; Polyakov, K.; Krutovertseva, A. Reducing Friction with a Liquid Film on the Body Surface. Lubricants 2018, 6, 25.
Klyuev N, Polyakov K, Krutovertseva A. Reducing Friction with a Liquid Film on the Body Surface. Lubricants. 2018; 6(1):25.Chicago/Turabian Style
Klyuev, Nikolay; Polyakov, Konstantin; Krutovertseva, Alyona. 2018. "Reducing Friction with a Liquid Film on the Body Surface." Lubricants 6, no. 1: 25.
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