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.

Volume

1

fYear

2006

fDate

25-29 Sept. 2006

Firstpage

329

Lastpage

332

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Discharges and Electrical Insulation in Vacuum, 2006. ISDEIV '06. International Symposium on

Conference_Location

Matsue

ISSN

1093-2941

Print_ISBN

1-4244-0191-7

Electronic_ISBN

1093-2941

Type

conf

DOI

10.1109/DEIV.2006.357298

Filename

4194878