Magnetic Fluid Bridge between Coaxial Cylinders with a Line Conductor in Case of Wetting

2015 ◽  
Vol 233-234 ◽  
pp. 335-338 ◽  
Author(s):  
Alexandra Vinogradova ◽  
Vera Naletova ◽  
Vladimir Turkov
Keyword(s):  
Magnetic Field ◽  
Free Surface ◽  
Analytical Solution ◽  
Magnetic Fluid ◽  
Axially Symmetric ◽  
Magnetic Liquid ◽  
Coaxial Cylinders ◽  
Straight Wire ◽  
A Current ◽  
Symmetric Shape

We consider a heavy, incompressible, homogenous, isothermal magnetic fluid between two coaxial cylinders in case of wetting. There is a current-carrying straight wire on the axis of these cylinders. The magnetic fluid is immersed in a non-magnetic liquid with the same density (the case of hydroimponderability). We apply the Langevin law to describe a magnetic fluid magnetization. Using the general analytical solution for any axially symmetric shape of the magnetic fluid free surface in any axisymmetric magnetic field, we investigate the break-up and the rebuilding of the magnetic fluid bridge in case of wetting.

scholarly journals Analytical Solution for MHD Flow of a Magnetic Fluid within a Thick Porous Annulus

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Shihhao Yeh ◽  
Tsai-Jung Chen ◽  
Jik Chang Leong
Keyword(s):  
Magnetic Field ◽  
Steady State ◽  
Angular Velocity ◽  
Analytical Solution ◽  
Magnetic Fluid ◽  
Mhd Flow ◽  
Induced Magnetic Field ◽  
State Problem ◽  
Closed Form Solutions ◽  
Steady State Problem

The steady-state problem of a magnetic fluid filling a porous annulus between two cylindrical walls under the influence of a nonuniform radially outward magnetic field has been investigated. The cylindrical walls are either electrically perfectly insulated or electrically perfectly conducting. The permeability of the porous annulus increases with its radial location. The governing partial differential equations were derived carefully and closed form solutions for the profiles of the velocity component and the induced magnetic component were obtained. The effect of the strength of the externally applied magnetic field, the permeability of the porous annulus, and the conductivity of the cylindrical walls were examined through the angular velocity components, as well as the induced magnetic field.

Relation between Dynamic Pressure and Displacement of Free Surface in Two-Layer Sloshing between a Magnetic Fluid and Silicone Oil

2014 ◽  
Vol 792 ◽  
pp. 33-38 ◽  
Author(s):  
Takayoshi Ishiyama ◽  
Shunsuke Kaneko ◽  
Shinichiro Takemoto ◽  
Tatsuo Sawada
Keyword(s):  
Magnetic Field ◽  
Free Surface ◽  
Magnetic Fluid ◽  
Silicone Oil ◽  
Dynamic Pressure ◽  
Pressure Change ◽  
Pressure Transducers ◽  
Presence And Absence

We performed experiments regarding two-layer sloshing, using a magnetic fluid and silicone oil, and measured the dynamic pressure change using pressure transducers. We also investigated displacements of the free surface by comparing it with the dynamic pressure, clarifying the relation between them, both in the presence and absence of a magnetic field.

Dynamics of a Partially Full Cylinder Containing a Magnetic Liquid in a Magnetic Field

1976 ◽  
Vol 43 (3) ◽  
pp. 497-501
Author(s):  
D. R. Tichenor ◽  
X. J. R. Avula
Keyword(s):  
Magnetic Field ◽  
Free Surface ◽  
Circular Cylinder ◽  
Plane Surface ◽  
Equations Of Motion ◽  
Magnetic Liquid ◽  
Transient Motion ◽  
Thin Walled ◽  
Inclined Planes ◽  
The Magnetic Field

This study is concerned with the transient motion of an infinitely long thin-walled circular cylinder partially filled with a magnetic liquid under magnetic and nonmagnetic forces. Starting from rest the cylinder is constrained to roll without slipping on a plane surface while the contained fluid with a rectangular free surface is simultaneously subjected to a magnetic field parallel to the plane by activating a magnet located ahead of the cylinder. The nonmagnetic force on the cylinder and its contents is provided by the gravity. Assuming negligible viscous dissipation Lagrange’s equations of motion are derived and solved to obtain the motion of the cylinder and the liquid subsequent to the application of the magnetic field. Results are presented in a nondimensional form for motion on horizontal and inclined planes under different magnetic strengths.

Magnetophoresis of microparticles in a magnetic liquid

2021 ◽  
pp. 99-105
Author(s):  
V.M. Polunin ◽  
◽  
P.A. Ryapolov ◽  
V.G. Bashtovoy ◽  
E.B. Postnikov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Fluid Layer ◽  
Inhomogeneous Magnetic Field ◽  
Magnetic Liquid ◽  
Reflection Of Light ◽  
Ring Magnet ◽  
And Diffusion ◽  
The Magnetic Field ◽  
Transmission And Reflection

An experimental setup has been developed for studying magnetophoresis in a layer of a magnetic fluid several millimeters thick by the method of transmission and reflection of light. In the experiment, we used the region of a ring magnet changing in sign of the magnetic field. The clarification of the central portion of the magnetic fluid layer, which is observed for several days, is interpreted by the fact that the concentration of particles is redistributed due to the processes of magnetophoresis of microparticles and diffusion of nanoparticles in an inhomogeneous magnetic field.

Sign in / Sign up

Export Citation Format

Share Document