The effect of magnetophoresis and Brownian diffusion on the levitation of bodies in a magnetic fluid

V. G. Bashtovoi¹ - V. K. Polevikov² - A. E. Suprun³ - A. V. Stroots³ - S. A. Beresnev²

¹ Belarusian National Technical University, 65 Nezavisimosti Ave., Minsk 220013, Belarus
² Belarusian State University, 4 Nezavisimosti Ave., Minsk 220030, Belarus
³ Ferrolabs Inc., 21525 Ridgetop Circle, Suite 260, Dulles VA 20166, USA

Abstract
New aspects related to the redistribution of magnetic particles concentration in a magnetic fluid caused by magnetophoresis and Brownian diffusion in a nonuniform magnetic field are considered. These aspects deal with the influence of these processes on the pressure redistribution and levitation of bodies in a magnetic fluid. It is shown that due to these processes the pressure force acting on bodies changes significantly with time and can be reduced dozens of percent if compared to a homogenous fluid. Figs 5, Refs 5.