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The self-propulsion of a body with moving internal masses in a viscous fluid
Authors:Evgeny V Vetchanin  Ivan S Mamaev  Valentin A Tenenev
Institution:16217. Izhevsk State Technical University, ul. Studencheskaya 7, Izhevsk, 426069, Russia
26217. Institute of Computer Science, Udmurt State University, ul. Universitetskaya 1, Izhevsk, 426034, Russia
36217. A.A. Blagonravov Mechanical Engineering Research Institute of RAS, ul. Bardina 4, Moscow, 117334, Russia
46217. Institute of Mathematics and Mechanics of the Ural Branch of RAS, ul. S. Kovalevskoy 16, Ekaterinburg, 620990, Russia
Abstract:An investigation of the characteristics of motion of a rigid body with variable internal mass distribution in a viscous fluid is carried out on the basis of a joint numerical solution of the Navier — Stokes equations and equations of motion for a rigid body. A nonstationary three-dimensional solution to the problem is found. The motion of a sphere and a drop-shaped body in a viscous fluid in a gravitational field, which is caused by the motion of internal material points, is explored. The possibility of self-propulsion of a body in an arbitrary given direction is shown.
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