| Numerical simulation of the effects of protrusion on DC arc anode attachment | |
Niu C(牛聪)1,2; Meng X(孟显)2 ; Huang HJ(黄河激)2; ZHU,Tao1; SUN,Surong1,3; WANG,Haixing1,3
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| Corresponding Author | WANG,Haixing() |
| Source Publication | Plasma Science and Technology
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| 2021-09-02 | |
| Volume | 23Issue:10Pages:11 |
| ISSN | 1009-0630 |
| Abstract | 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. |
| Keyword | DC arc arc anode attachment anode protrusion chemical non-equilibrium |
| DOI | 10.1088/2058-6272/ac125e |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | IOP:1009-0630-23-10-ac125e |
| WOS Keyword | TRANSPORT-COEFFICIENTS ; HEAT-TRANSFER ; ARGON-HYDROGEN ; CATHODE SPOT ; DIFFUSION ; NITROGEN ; PLASMAS ; REGION ; MODEL ; OXYGEN |
| WOS Research Area | Physics |
| WOS Subject | Physics, Fluids & Plasmas |
| Funding Project | National Natural Science Foundation of China[11735004] ; National Natural Science Foundation of China[12005010] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | Q3 |
| Ranking | 1 |
| Contributor | WANG,Haixing |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/87351 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.School of Astronautics, Beihang University, Beijing 100191, People’s Republic of China; 2.Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China; 3.Ningbo Institute of Technology, Beihang University, Ningbo 315800, People’s Republic of China |
| Recommended Citation 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.Rp_Au:WANG,Haixing |
| 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. |
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| Jp2021F433.pdf（1948KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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