Jc. Verite et al., ARC MODELING IN-CIRCUIT BREAKERS - COUPLING BETWEEN ELECTROMAGNETICS AND FLUID-MECHANICS, IEEE transactions on magnetics, 31(3), 1995, pp. 1843-1848
Electrical arcs in circuit breakers are very complex phenomena involvi
ng many aspects of Physics: fluid mechanics, radiative processes, elec
tromagnetics... and their numerical modelling exhibits various couplin
gs. After a physical analysis of the phenomena, showing which coupling
s are important and which are not, we present axisymmetric simulations
of arcs for two kinds of SF6 breakers, a two pressure breaker and a r
otary arc breaker. We focus our study on the coupling between fluid me
chanics and electromagnetics (influence of Laplace forces on the flow,
stability).