Title :
MUD simulation of high-current vacuum arc under different axial magnetic fields
Author :
Wang, Lijun ; Jia, Shenli ; Shi, Zongqian ; Zhang, Ling ; Rong, Mingzhe
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equip., Xi´´an Jiaotong Univ.
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
Keywords :
plasma boundary layers; plasma magnetohydrodynamics; supersonic flow; vacuum arcs; MHD simulation; arc column; arc current; axial magnetic field; high-current vacuum arc; ion kinetic energy; magnetohydrodynamics; plasma flow; plasma loss; subsonic flow; supersonic flow; viscosity effect; Analytical models; Kinetic energy; Magnetic analysis; Magnetic fields; Magnetohydrodynamics; Multiuser detection; Plasma properties; Plasma simulation; Vacuum arcs; Viscosity;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum, 2006. ISDEIV '06. International Symposium on
Conference_Location :
Matsue
Print_ISBN :
1-4244-0191-7
Electronic_ISBN :
1093-2941
DOI :
10.1109/DEIV.2006.357298
