Research on Multi-Physical Field Coupling of DC Plasma Arc
Abstract
Circuit breakers are crucial devices for connecting and disconnecting load circuits. Research on the plasma arcs generated by circuit
breakers holds significant theoretical and practical value. In this paper, a magnetohydrodynamics (MHD) approach is employed for modeling,
focusing on the electrical and thermal characteristics of DC plasma arcs by simulating a DC arc under local thermodynamic equilibrium (LTE).
Under different current conditions, the analysis examines the fluctuations in parameters across various physical fields and the influence of
multi-physics parameter coupling on arc burning. The results indicate that near the electrodes, both temperature and energy density increase,
affecting the conductivity and magnetic field distribution. Overall, the trends of several physical fields are largely consistent.
breakers holds significant theoretical and practical value. In this paper, a magnetohydrodynamics (MHD) approach is employed for modeling,
focusing on the electrical and thermal characteristics of DC plasma arcs by simulating a DC arc under local thermodynamic equilibrium (LTE).
Under different current conditions, the analysis examines the fluctuations in parameters across various physical fields and the influence of
multi-physics parameter coupling on arc burning. The results indicate that near the electrodes, both temperature and energy density increase,
affecting the conductivity and magnetic field distribution. Overall, the trends of several physical fields are largely consistent.
Keywords
Circuit breaker;Arc; MHD; Multiphysics coupling
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DOI: http://dx.doi.org/10.70711/itr.v3i3.9234
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