Influence of Mass Transfer Processes on Couette Flow of Magnetic Fluid

Authors V.G. Bashtovoi1, S.G. Pogirnitskaya1, R. Kuzhir2, V.M. Polunin3, P.A. Ryapolov3 , I.A. Shabanova3, A.M. Storozhenko3

1 Belarusian National Technical University, 65, Nezavisimosti Ave., 220013 Minsk, Belarus

2 Univeristy of Nice-Sophia Antipolis, Parc Valrose 06108 Nice Cedex 2, France

3 Southwest State University, 94, 50 Let Oktyabrya Str., 305040 Kursk, Russia

Issue Volume 5, Year 2013, Number 4
Dates Received 27 October 2013; published online 10 December 2013
Citation V.G. Bashtovoi, S.G. Pogirnitskaya, R. Kuzhir, et al., J. Nano- Electron. Phys. 5 No 4, 04011 (2013)
PACS Number(s) 47.11. – j, 47.15. – x
Keywords Couett flow, Magnetic fluid (21) , Magnetic particles, Brownian diffusion (3) , Magnetophoresis (2) , concentration (6) , Viscosity (2) , Shearing force.
Annotation This article describes the results of a theoretical study of magnetic fluid two-dimensional Couett flow in magnetic fluid seal model in view of mass transfer processes. It has been shown that very inhomogeneous magnetic field in seal gap lead to magnetic particle concentration rearrangement due to magnetophoresis and Brownian diffusion. In turn, it lead to inhomogeneous magnetic fluid viscosity and change in local and integral shearing force at channel walls. Integral shearing force has been shown to depend on magnetic field and magnetic fluid parameters. Closely-packed fluid density distribution conditions have been defined. Proposed theory covers real magnetic fluid seal performance features adequately.

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