SF6灭弧室内小容性电流开断的数值模拟

以建立一种可解决超音速、亚音速、跨音速、冲击波共存情况下的可压缩粘性非稳态流体控制方程的数值求解为目的,提出一种新方法.作为该方法的应用实例,对SF6断路器开断过程中灭弧室内粘性气体的流动特性进行了数值计算,给出了在触头开断过程中气流特性的分布情况,解决了SF6断路器灭弧室内具有大畸变的粘性流体的数值计算,并对两种结构灭弧室开断小电容性电流后的介质恢复强度进行了计算.

The Numerical Simulation of Small Capacitive Current Interruption in SF6 Arc Chamber

It is the purpose to create a new computational metho d applied to the existence of the supersonic, sub critical sonic, transonic, sho ck wave, so as to settle the unsteady flow control equations with the viscous it em. The distribution of the gas flow characteristics with contact movement is gi ven. The computational process of the complicated flow field with strongly irreg ular variations for the viscous flow in the interrupter of SF 6 circuit breake r is solved. At the same time, the dielectric recovery characteristics of SF 6 arc chamber post the interruption of the small capacitive current arc calculated .