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Numerical simulation of the effects of protrusion on DC arc anode attachment

文献类型：期刊论文

作者Niu C(牛聪)2,3; Meng X(孟显)2; Huang HJ(黄河激)2; ZHU,Tao3; SUN,Surong1,3; WANG,Haixing1,3
刊名Plasma Science and Technology
出版日期2021-09-02
卷号23期号:10页码:11
ISSN号1009-0630
关键词DC arc arc anode attachment anode protrusion chemical non-equilibrium
DOI10.1088/2058-6272/ac125e
通讯作者WANG,Haixing()
英文摘要Abstract The attachment of the DC arc on the anode is usually affected by surface morphology such as protrusions due to ablation or melting deformation. A three-dimensional thermodynamic and chemical non-equilibrium model is used to numerically simulate the effect of artificially assumed surface protrusions on the arc anode attachment. The numerical simulation results show that the arc deflects toward the protrusions on the anode and attaches to them in a constricted mode, resulting in an increase in the temperature of the arc attachment region. The analysis shows that the presence of protrusion on the anode surface changes the electric field distribution, intensifies the degree of thermodynamic and chemical non-equilibrium in its vicinity, further influences the chemical kinetic process of the plasma around it, which is the main reason for the deflection of the arc toward the protrusions and the arc anode attachment in a constricted mode. In order to verify the numerical simulation results, verification experiments are also performed using similar size scale anode protrusion, and the results showed that the presence of protrusion can indeed cause the deflection of the arc and even cause the ablation of the protrusion.
分类号Q3
WOS关键词TRANSPORT-COEFFICIENTS ; HEAT-TRANSFER ; ARGON-HYDROGEN ; CATHODE SPOT ; DIFFUSION ; NITROGEN ; PLASMAS ; REGION ; MODEL ; OXYGEN
资助项目National Natural Science Foundation of China[11735004] ; National Natural Science Foundation of China[12005010]
WOS研究方向Physics
语种英语
WOS记录号IOP:1009-0630-23-10-AC125E
资助机构National Natural Science Foundation of China
其他责任者WANG,Haixing
源URL[http://dspace.imech.ac.cn/handle/311007/87350]  
专题力学研究所_高温气体动力学国家重点实验室
作者单位1.Ningbo Institute of Technology, Beihang University, Ningbo 315800, People’s Republic of China
2.Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China;
3.School of Astronautics, Beihang University, Beijing 100191, People’s Republic of China;
推荐引用方式
GB/T 7714		 Niu C,Meng X,Huang HJ,et al. Numerical simulation of the effects of protrusion on DC arc anode attachment[J]. Plasma Science and Technology,2021,23(10):11.
APA 牛聪,孟显,黄河激,ZHU,Tao,SUN,Surong,&WANG,Haixing.(2021).Numerical simulation of the effects of protrusion on DC arc anode attachment.Plasma Science and Technology,23(10),11.
MLA 牛聪,et al."Numerical simulation of the effects of protrusion on DC arc anode attachment".Plasma Science and Technology 23.10(2021):11.

入库方式： OAI收割

来源：力学研究所

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