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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
Corresponding AuthorWANG,Haixing()
Source PublicationPlasma Science and Technology
2021-09-02
Volume23Issue:10Pages:11
ISSN1009-0630
AbstractAbstract 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.
KeywordDC arc arc anode attachment anode protrusion chemical non-equilibrium
DOI10.1088/2058-6272/ac125e
Indexed BySCI ; EI
Language英语
WOS IDIOP:1009-0630-23-10-ac125e
WOS KeywordTRANSPORT-COEFFICIENTS ; HEAT-TRANSFER ; ARGON-HYDROGEN ; CATHODE SPOT ; DIFFUSION ; NITROGEN ; PLASMAS ; REGION ; MODEL ; OXYGEN
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
Funding ProjectNational Natural Science Foundation of China[11735004] ; National Natural Science Foundation of China[12005010]
Funding OrganizationNational Natural Science Foundation of China
ClassificationQ3
Ranking1
ContributorWANG,Haixing
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/87351
Collection高温气体动力学国家重点实验室
Affiliation1.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.
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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