SF_6断路器灭弧室二维轴对称气流场有限元计算

Finite Element Calculation of Gas Flow in an Axisymmetric Interrupter of SF_6 Circuit Breaker

采用加权余数有限无法,对灭弧室内的轴对称气流场进行了数值计算,空间离散采用Calerkin加权积分,时间离散采用泰勒展开式,为了抑制非物理振荡,在方程中引入人工粘性修正。在解法上采用质量集中法(Lumped Mass Method)。计算结果与理论分析相吻和,表明这是一种十分有效的灭弧室气流场数值分析方法。

Gas flow in an axisymmetric interrupter was calculated by a weighed residual finite element method. In the scheme Taloy series expansions for time discretization and Galerkin method for spatial discretization were applied. The artificial viscosity was introduced into the governing equation to surpass the numeri -cal oscillation.The equation was solved by the lumped mass method . The agre -ement between the numerical results and the thereotical analysis shows the effec-tiveness of the numerical method.