| Abstract: | The dynamics of a rigid cylindrical body subjected to high-frequency rotational vibration about its own axis in a liquid-filled
sector of a horizontal cylindrical layer are investigated experimentally and theoretically. It is found that the vibrations
generate an average force on the body which in the case of a body denser than the fluid is directed toward the axis of rotation.
Under certain conditions this force exceeds the gravity force, causing the body to float. This effect is analyzed theoretically
in the high-frequency low-amplitude vibration approximation. It is shown that the force detected acts on the body over the
entire fluid volume.
Perm’. Paris. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 4, pp. 29–39, July–August,
1998.
The work partially supported by the Russian Foundation for Basic Research (project No. 96-01-00932) and Grant No. 920-5208/95
of the US National Aviation and Space Administration (US NASA). |
