Sufficiently diffused attachment of nitrogen arc by gasdynamic action

Pan Wenxia ^* Chen Lewen Meng Xian Zhang Yong Wu Chengkang

文摘	For realizing diffused anode attachment in pure nitrogen arcs, a special arc plasma generator was designed and combined with suitable working parameters such as gas flow rate and arc current. The anode has a flow-restrictor channel of 2.8 mm diameter and downstream expansion half-angle of 8°,with the purpose of creating a dispersed nitrogen-arc column by strong gasdynamic expansion effect. Results show that, when thermal blocking condition existed in the flow restrictor and the cathode cavity pressure was higher than that in the exit chamber by at least 9 kPa, the action due to gasdynamic expansion could be much stronger than the self-magnetic contraction effect of the arc and the nitrogen arc column could be effectively dispersed to form a sufficiently diffused attachment on the water-cooled anode surface.
来源	Theoretical and Applied Mechanics Letters ,2016,6(6):293-296 【核心库】
DOI	10.1016/j.taml.2016.09.001
关键词	Pure nitrogen arc ; Diffused arc root attachment ; Gas dynamic expanding action ; Arc channel structure ; Working parameter
地址	Institute of Mechanics,Chinese Academy of Sciences, The State Key Laboratory of High Temperature Cas Dynamics, Beijing, 100190
语种	英文
文献类型	研究性论文
ISSN	2095-0349
学科	物理学
基金	国家自然科学基金
文献收藏号	CSCD:5911568

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Sufficiently diffused attachment of nitrogen arc by gasdynamic action