Open AccessComputer simulation of high current vacuum arc with developed anode spot
Author(s) -
D. L. Shmelev,
I. V. Uimanov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1393/1/012024
Subject(s) - anode , vacuum arc , plasma , current (fluid) , plume , arc (geometry) , atomic physics , materials science , ion , mechanics , plasma arc welding , electron , electric arc , flux (metallurgy) , computational physics , optics , physics , electrode , thermodynamics , mechanical engineering , nuclear physics , metallurgy , quantum mechanics , engineering
A self-consistent simulation of anode heating by 4.5 kA vacuum arc during the half-wave of 50 Hz current with 1 m/s contact opening was carried out. The calculations were done in the framework of hybrid high current vacuum arc model, which treats ions and atoms as macroparticles with the help of particle-in-cell methods, but electron subsystem is treated as massless fluid with quasineutrality assumed. The occurrence of an anode plasma plume (similar to that found in experiments) was obtained as a result of modeling. It is shown that the energy flux of line radiation from the interelectrode plasma to the anode is a critical reason of the appearance and maintenance of the anode plume.