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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2014, Volume 55, Issue 5, Pages 55–64
(Mi pmtf1026)
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This article is cited in 8 scientific papers (total in 8 papers)
Lift force acting on a cylindrical body in a fluid near the boundary of a cavity performing translational vibrations
A. A. Ivanova, V. G. Kozlov, V. D. Schipitsyn Perm’ State Humanitarian Pedagogical University, Perm’, 614990, Russia
Abstract:
The averaged lift force acting on a cylindrical body near the boundary of a cavity with a fluid performing translational vibrations was studied. Experiments were performed with variation the viscosity of the fluid, the size and relative density of the body, and vibration parameters were varied. The lift force was measured by the method of dynamic suspension of a body in a gravitational field in the case where the body performed inertial vibrations without touching the walls. It was found that the vibrations generated a repulsion force which held the heavy body over the bottom of the cavity, and the light body at a certain distance from the top wall. It was shown that the effect of the repulsion forces manifested itself at a distance comparable to the thickness of the Stokes layer and increased with approach to the wall. A description of the mechanism of generation of the lift force is given. It is shown that in the case of high dimensionless frequencies, the experimental and theoretical results are in agreement.
Keywords:
vibrations, vibrational mechanics, cylindrical body, hydrodynamic interaction, lift force.
Received: 24.07.2013 Revised: 28.10.2013
Citation:
A. A. Ivanova, V. G. Kozlov, V. D. Schipitsyn, “Lift force acting on a cylindrical body in a fluid near the boundary of a cavity performing translational vibrations”, Prikl. Mekh. Tekh. Fiz., 55:5 (2014), 55–64; J. Appl. Mech. Tech. Phys., 55:5 (2014), 773–780
Linking options:
https://www.mathnet.ru/eng/pmtf1026 https://www.mathnet.ru/eng/pmtf/v55/i5/p55
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