{"title":"MUD simulation of high-current vacuum arc under different axial magnetic fields","authors":"Lijun Wang, S. Jia, Z. Shi, Ling Zhang, M. Rong","doi":"10.1109/DEIV.2006.357298","DOIUrl":null,"url":null,"abstract":"Based on MHD model, high current vacuum arc (HCVA) is simulated and analyzed. In this model, the influence of ion kinetic energy and viscosity is considered. With the increase of arc current, plasma flow transits from supersonic to subsonic status; so, boundary conditions of cathode and anode side have to be adjusted. First, we simulate and analyze the fundamental characteristics of HCVA. Then, we simulate and analyze the influence of nonuniform distributed AMF on HCVA characteristics. According to the simulation results, the saddle-shaped AMF can more effectively inhibit plasma loss from arc column than that of bell-shaped AMF. Comparisons between simulation results and experimental results show the Tightness of model and simulation","PeriodicalId":369861,"journal":{"name":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","volume":"36 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2006-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 International Symposium on Discharges and Electrical Insulation in Vacuum","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/DEIV.2006.357298","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Based on MHD model, high current vacuum arc (HCVA) is simulated and analyzed. In this model, the influence of ion kinetic energy and viscosity is considered. With the increase of arc current, plasma flow transits from supersonic to subsonic status; so, boundary conditions of cathode and anode side have to be adjusted. First, we simulate and analyze the fundamental characteristics of HCVA. Then, we simulate and analyze the influence of nonuniform distributed AMF on HCVA characteristics. According to the simulation results, the saddle-shaped AMF can more effectively inhibit plasma loss from arc column than that of bell-shaped AMF. Comparisons between simulation results and experimental results show the Tightness of model and simulation
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