Multi-stage convergent-divergent nozzle structure and their effects on gas flow in high voltage SF/sub 6/ circuit breaker
A novel combined improved total variation diminish scheme (TVD) with finite volume method (FVM) has been proposed and applied for calculating the N-S and K-epsi equation of flow field in SF6 circuit breaker under no-load breaking in this paper. And during the computing, the influence of actual nozzle structure is taken into consideration. Through the computation and analysis of combined electric field and flow field, the effect of gas flow on the dielectric recovery characteristic with different multi-stage convergent-divergent nozzle structure and their effects on gas flow in high voltage SF6  circuit breaker have been obtained and analyzed