The influence of a cylindrical cathode on the electro-vortex flow of liquid metal: Numerical simulations and laboratory experiments

2021 ◽  
Author(s):  
Vladislav Eltishchev ◽  
Sergei Mandrykin ◽  
Ilya Kolesnichenko
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Liquid Metal ◽  
Electric Current ◽  
Laboratory Experiments ◽  
Vortex Flow ◽  
Qualitative Change ◽  
Critical Magnetic Field ◽  
Current Application ◽  
Cylindrical Cell

Abstract The electro-vortex flow of liquid metal in a cylindrical cell, placed into external vertical magnetic field, in case of axial electric current application is studied numerically and experimentally. The results are compared to those previously obtained in case of a localized electric current application. In the absence of the external magnetic field, the comparison shows no qualitative change in the flow structure. In presence of the external magnetic field, a poloidal motion is suppressed. A critical magnetic field of poloidal suppression is shown to be approximately 50% higher in case of axial electric current application.

scholarly journals Dark Current and Magnetic Field in Liquid

2021 ◽  
Vol 3 (6) ◽  
pp. 21-24
Author(s):  
S. A. G Erasimov
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Liquid Metal ◽  
Electric Current ◽  
Dark Current ◽  
Metal Contact ◽  
Clean Water ◽  
Aluminum Electrodes ◽  
The Magnetic Field

The dark electric current arising from the contact of aluminum with clean water decreases with an increase in the induction of the external magnetic field. Changing the distance between the source of the magnetic field and the aluminum electrodes makes it possible to determine the region of formation of the dark current. It turns out that this occurs in the area of liquid-metal contact where the curvature of the electrodes is maximal.

scholarly journals 50. Magneto-hydrostatic equilibrium in an external magnetic field

1958 ◽  
Vol 6 ◽  
pp. 499-503 ◽  
Author(s):  
P. A. Sweet
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Electric Current ◽  
Virial Theorem ◽  
Magnetic Energy ◽  
Hydrostatic Equilibrium

The expression ∫∫∫all space ΔH2dv for a change in magnetic energy is shown to be incorrect when applied to a body carrying an electric current and situated in an external magnetic field. A modified expression is derived.Chandrasekhar's form of the virial theorem in a magnetic field is extended to the case where an external magnetic field is present.

RELAXATION OF THE MAGNETISATION IN SUPERCONDUCTING OXIDES

1989 ◽  
Vol 03 (10) ◽  
pp. 1503-1509 ◽  
Author(s):  
A.M. GABOVICH ◽  
D.P. MOISEEV ◽  
G.I. PANAITOV ◽  
V.M. POSTNIKOV ◽  
A.S. SIDORENKO ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Decay Rate ◽  
Critical Magnetic Field ◽  
Squid Magnetometer ◽  
Oxide Superconductors ◽  
Superconducting Oxides ◽  
The Law

Relaxation of the thermoremanent magnetisation M in oxide superconductors BaPb 0.75 Bi 0.25 O 3, YBa 2 Cu 3 O 7−δ, Bi 2 Sr 2 CaCu 2 O x and Bi 4 Sr 3 Ca 4 Cu 4 O x is measured at T=4.2 K by the SQUID magnetometer. It is well described by the law M(t)=M0- Sln t, where t is the time, M0 and S are constants. The dependence of the decay rate S on the external magnetic field H is investigated in detail for the ceramics BaPb 0.75 Bi 0.25 O 3 with a low first critical magnetic field H cl ~12 Oe .

scholarly journals Температурные зависимости критических параметров неоднородных сверхпроводящих пленок

2021 ◽  
Vol 63 (8) ◽  
pp. 1035
Author(s):  
П.И. Безотосный ◽  
К.А. Дмитриева
Keyword(s):  
Magnetic Field ◽  
Critical Temperature ◽  
External Magnetic Field ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Superconducting Films ◽  
Critical Magnetic Field ◽  
Temperature Dependences ◽  
Comparison Of The Results

The results of calculating the temperature dependences of the critical current density and critical magnetic field of thin inhomogeneous superconducting films are presented. Comparison of the results obtained for inhomogeneous films with the results of calculations for homogeneous ones showed that in both cases, the decrease in the critical magnetic field occurs according to the root law, and the critical current density changes according to a power law with a degree of 3/2 when approaching the critical temperature. Quantitatively, the critical current density for inhomogeneous films in the absence of an external magnetic field is lower than for homogeneous ones. In turn, the critical magnetic field of inhomogeneous films is much larger than the critical field of homogeneous films.

scholarly journals Rotation induced by uniform and non-uniform magnetic fields in a conducting fluid carrying an electric current

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 112641-112645 ◽  
Author(s):  
R. Shirsavar ◽  
M. Nasiri ◽  
A. Amjadi ◽  
A. Nejati ◽  
S. O. Sobhani ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Magnetic Fields ◽  
Electric Current ◽  
Conducting Fluid

External magnetic field induces controllable rotation in a conducting fluid carrying an electric current.

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