scholarly journals Capacitive making of double‐break vacuum circuit breaker: Transverse magnetic field contacts are superior to axial magnetic field contacts

2022 ◽  
Author(s):  
Yun Geng ◽  
Xinggui Chen ◽  
Luyang Zhang ◽  
Xiaofei Yao ◽  
Jing Peng ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Transverse Magnetic Field ◽  
Axial Magnetic Field ◽  
Circuit Breaker ◽  
Transverse Magnetic ◽  
Vacuum Circuit Breaker

scholarly journals The effect of uniform magnetic field on spatial-temporal evolution of thermocapillary convection with the silicon oil based ferrofluid

2020 ◽  
Vol 24 (6 Part B) ◽  
pp. 4159-4171
Author(s):  
Shuo Yang ◽  
Rui Ma ◽  
Qiaosheng Deng ◽  
Guofeng Wang ◽  
Yu Gao ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Free Surface ◽  
Transverse Magnetic Field ◽  
Liquid Bridge ◽  
Thermocapillary Convection ◽  
Surface Deformation ◽  
Axial Magnetic Field ◽  
Transverse Magnetic ◽  
Surface Flow ◽  
Silicon Oil

A uniform axial or transverse magnetic field is applied on the silicon oil based ferrofluid of high Prandtl number fluid (Pr ? 111.67), and the effect of magnetic field on the thermocapillary convection is investigated. It is shown that the location of vortex core of thermocapillary convection is mainly near the free surface of liquid bridge due to the inhibition of the axial magnetic field. A velocity stagnation region is formed inside the liquid bridge under the axial magnetic field (B = 0.3-0.5 T). The disturbance of bulk reflux and surface flow is suppressed by the increasing axial magnetic field. There is a dynamic response of free surface deformation to the axial magnetic field, and then the contact angle variation of the free surface at the hot corner is as following, ?hot, B = 0.5 T = 83.34? > ?hot, B = 0.3 T = 72.16? > > ?hot,B = 0.1 T = 54.21? > ?hot, B = 0 T = 43.33?. The results show that temperature distribution near the free surface is less and less affected by thermocapillary convection with the increasing magnetic field, and it presents a characteristic of heat-conduction. In addition, the transverse magnetic field does not realize the fundamental inhibition for thermocapillary convection, but it transfers the influence of thermocapillary convection to the free surface.

Vacuum Circuit Breaker Electrode Generating Multi-Pole Axial Magnetic Field and its Interruption Ability

1980 ◽  
Vol PAS-99 (6) ◽  
pp. 2079-2085 ◽  
Author(s):  
Y. Kurosawa ◽  
H. Sugawara ◽  
Y. Kawakubo ◽  
N. Abe ◽  
H. Tsuda
Keyword(s):  
Magnetic Field ◽  
Axial Magnetic Field ◽  
Circuit Breaker ◽  
Vacuum Circuit Breaker

Vacuum arcing behavior between transverse magnetic field contacts subjected to variable axial magnetic field

2016 ◽  
Vol 23 (6) ◽  
pp. 063517 ◽  
Author(s):  
Hui Ma ◽  
Jianhua Wang ◽  
Zhiyuan Liu ◽  
Yingsan Geng ◽  
Zhenxing Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Transverse Magnetic Field ◽  
Axial Magnetic Field ◽  
Transverse Magnetic
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