scholarly journals Magnetic field and electric current density distribution in the geomagnetic tail, based on Geotail data

2001 ◽  
Vol 106 (A11) ◽  
pp. 25919-25927 ◽  
Author(s):  
P. L. Israelevich ◽  
A. I. Ershkovich ◽  
N. A. Tsyganenko
Keyword(s):  
Magnetic Field ◽  
Density Distribution ◽  
Electric Current ◽  
Current Density ◽  
Current Density Distribution ◽  
Electric Current Density ◽  
Geomagnetic Tail

Improving Performance of Laser and Shaped Tube Electrochemical Machining by Using Retracted Hybrid Tubular Tool Electrode

2021 ◽  
Author(s):  
yong yang ◽  
yufeng wang ◽  
Yujie Gui ◽  
Fuhui Shao ◽  
Yulei Li ◽  
...  
Keyword(s):  
Density Distribution ◽  
Electric Current ◽  
Current Density ◽  
Feeding Rate ◽  
Electrochemical Machining ◽  
Current Density Distribution ◽  
Electric Current Density ◽  
Tool Electrode ◽  
Shaped Tube ◽  
Tubular Electrode

Abstract The coaxial laser has been introduced to shaped tube electrochemical machining (STEM), referred to as Laser-STEM, to enhance the materials removal rate and precision. To address the issue of central residual formation during the Laser-STEM process, which limited the machining stability and feeding rate, the retracted hybrid tubular electrode was applied. The formation mechanisms and effects of the W-shaped central residual were analyzed. Simulation and experiments were conducted to study the impact of the retracted length of the tubular electrode. Simulation results showed that a retracted length of 1-1.5 mm of the inner low-refractive layer could improve the electric current density distribution homogeneity to remove the W-shaped central residual in the machining area. The electric current density distribution homogeneity in the machining zone has been decreased by 38% by utilizing the hybrid tubular electrode with a retracted length of 2.0 mm. With a proper retracted length, the laser coupling efficiency exceeded 74.5%. Hence, the retracted hybrid tubular electrode could act as both the tool electrode and optical waveguide in the Laser-STEM process. Experimental results proved that the machining efficiency and precision of Laser-STEM could be enhanced by utilizing the retracted hybrid tubular electrode. With the retracted length deg rising from 0 mm to 1.5 mm, the maximum feeding speed increased by 373%, and the machining precision was improved by 42.2%. The maximum feeding rate of 4.1 mm/min has been achieved using the retracted hybrid tubular electrode in the Laser-STEM process, which has been improved by 105%, compared with the available maximum feeding rate of the tubular electrode in the STEM process. Finally, the small holes with a diameter of 1.4 mm and an aspect ratio of 15 have been processed by Laser-STEM with the retracted hybrid tubular electrode.

scholarly journals Bifurcation of Jovian magnetotail current sheet

2006 ◽  
Vol 24 (6) ◽  
pp. 1479-1481 ◽  
Author(s):  
P. L. Israelevich ◽  
A. I. Ershkovich
Keyword(s):  
Magnetic Field ◽  
Current Sheet ◽  
Electric Current ◽  
Current Density ◽  
Current Density Distribution ◽  
Field Measurements ◽  
Electric Current Density ◽  
Current Layer ◽  
The Magnetic Field ◽  
Magnetotail Current Sheet

Abstract. Multiple crossings of the magnetotail current sheet by a single spacecraft give the possibility to distinguish between two types of electric current density distribution: single-peaked (Harris type current layer) and double-peaked (bifurcated current sheet). Magnetic field measurements in the Jovian magnetic tail by Voyager-2 reveal bifurcation of the tail current sheet. The electric current density possesses a minimum at the point of the Bx-component reversal and two maxima at the distance where the magnetic field strength reaches 50% of its value in the tail lobe.

scholarly journals Global Solar Free Magnetic Energy and Electric Current Density Distribution of Carrington Rotation 2124

Solar Physics ◽  
2014 ◽  
Vol 289 (11) ◽  
pp. 4031-4045 ◽  
Author(s):  
Tilaye Tadesse ◽  
Alexei A. Pevtsov ◽  
T. Wiegelmann ◽  
P. J. MacNeice ◽  
S. Gosain
Keyword(s):  
Density Distribution ◽  
Electric Current ◽  
Current Density ◽  
Magnetic Energy ◽  
Current Density Distribution ◽  
Electric Current Density ◽  
Carrington Rotation ◽  
Free Magnetic Energy

Electric current density distribution in planar solid tumor and its surrounding healthy tissue generated by an electrode elliptic array used in electrotherapy

2010 ◽  
Vol 80 (9) ◽  
pp. 1886-1902 ◽  
Author(s):  
Andrés Ramírez Aguilera ◽  
Luis Enrique Bergues Cabrales ◽  
Héctor Manuel Camué Ciria ◽  
Yudelmis Soler Pérez ◽  
Fidel Gilart González ◽  
...  
Keyword(s):  
Density Distribution ◽  
Electric Current ◽  
Current Density ◽  
Solid Tumor ◽  
Current Density Distribution ◽  
Healthy Tissue ◽  
Electric Current Density ◽  
Surrounding Healthy Tissue

scholarly journals The effect of simplifications of a numerical mesh on the results of electromagnetic analysis of the Nuclotron-type cable

2018 ◽  
Vol 177 ◽  
pp. 08004
Author(s):  
Łukasz Tomków
Keyword(s):  
Magnetic Field ◽  
Electric Current ◽  
Current Density ◽  
Electric Current Density ◽  
Electromagnetic Analysis ◽  
First Case ◽  
Single Region ◽  
The Magnetic Field

The model of a single Nuclotron-type cable is presented. The goal of this model is to assess the behaviour of the cable under different loads. Two meshes with different simplifications are applied. In the first case, the superconductor in the cable is modelled as single region. Second mesh considers individual strands of the cable. The significant differences between the distributions of the electric current density obtained with both models are observed. The magnetic field remains roughly similar.

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