In this paper , the gas flow is simulated in the 252kv self - extinguishing type sf6 circuit breaker which is being studied by the tianying company in pingdingshan . the idea which combines the self - programmed method and the fluid computation software is presented 本文配合平頂山天鷹集團開發(fā)研制的252kv自能式sf _ 6斷路器,建立了相應的滅弧室氣流場數(shù)學模型,提出了一種利用流體計算軟件和自編程相結合的方法對滅弧室內的氣流場進行計算。
In fluid field solving , the numerical flux is estimated using high - accuracy roe scheme with limiter . in time marching , we use dual - time stepping together with implicit lu - sgs scheme and get reasonable results efficiently . the difference of the fluid computation between single grid and overset grids lies in the dispose of the computation boundary 流場解算時,對流場數(shù)值通量的求解采用的是帶限制器的高階精度roe格式,時間推進采用了含雙時間步長的隱式lu - sgs ( lower - uppersymmetricgauss - seidel )格式,提高了求解的效率。