Investigation on Plasma Jet Flow Phenomena During DC Air Arc Motion in Bridge-Type Contacts

ZHAI Guofu (翟国富); BO Kai (薄凯); CHEN Mo (陈默); ZHOU Xue (周学); QIAO Xinlei (乔鑫磊)

doi:10.1088/1009-0630/18/5/07

Plasma Science and Technology > 2016 > 18(5): 485-489. > DOI: 10.1088/1009-0630/18/5/07

ZHAI Guofu (翟国富), BO Kai (薄凯), CHEN Mo (陈默), ZHOU Xue (周学), QIAO Xinlei (乔鑫磊). Investigation on Plasma Jet Flow Phenomena During DC Air Arc Motion in Bridge-Type Contacts[J]. Plasma Science and Technology, 2016, 18(5): 485-489. DOI: 10.1088/1009-0630/18/5/07

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Investigation on Plasma Jet Flow Phenomena During DC Air Arc Motion in Bridge-Type Contacts

Military Electrical Apparatus Institute, Harbin Institute of Technology, Harbin 150001, China

Funds: supported by National Natural Science Foundation of China (Nos. 51307030, 51277038)

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Received Date: September 08, 2015

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Abstract

Abstract

Arc plasma jet flow in the air was investigated under a bridge-type contacts in a DC 270 V resistive circuit. We characterized the arc plasma jet flow appearance at different currents by using high-speed photography, and two polished contacts were used to search for the relationship between roughness and plasma jet flow. Then, to make the nature of arc plasma jet flow phenomena clear, a simplified model based on magnetohydrodynamic (MHD) theory was established and calculated. The simulated DC arc plasma was presented with the temperature distribution and the current density distribution. Furthermore, the calculated arc flow velocity field showed that the circular vortex was an embodiment of the arc plasma jet flow progress. The combined action of volume force and contact surface was the main reason of the arc jet flow.
- arc plasma,
- jet flow,
- arc model,
- resistive load

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References

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