摘要
在计算流体动力学(CFD)商用软件包二次开发的基础上针对低压断路器简化灭弧室,采用磁流体动力学(MHD)理论建立了三维电弧仿真模型。仿真计算结果描述了电弧弧柱收缩、等离子体喷流和电弧形态等相关现象,研究发现磁场、出气口面积的增大可加速电弧运动,但出气口面积到达一定程度后,其大小变化对电弧运动的影响很小,而栅片的存在则对灭弧室气流具有一定阻挡作用。电弧运动的实验结果验证了仿真模型的合理性。
Based on a modified computational fluid dynamics（CFD） software, a three dimension （3D） arc model in a simplified geometry of arc quenching chamber is built and calculated by using the magneto-hydrodynamic（MHD） theory. Some phenomena such as arc shrinkage, plasma jet and arc shape are discussed. It is found that the arc column can be accelerated with the external magnetic field and the growing outlet area. However, when the outlet area is enlarged to some value, its change leads to little influence on the arc motion. The splitter plates have block effect on the flow field in the arc chamber. The experimental results prove the validity of the arc model.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第21期143-148,共6页
Proceedings of the CSEE
基金
国家自然科学基金项目(50477025)。~~
关键词
低压断路器
电弧运动
仿真
磁流体动力学
计算流体力学
Low voltage circuit breaker
Arc motion
Simulation
Magneto-hydrodynamic（MHD）
Computational fluid dynamics （CFD）
