中文摘要：

针对现有的软件不能很好的解决真空断路器多物理场耦合计算问题,自行开发有针对性的软件是一个良好的途径。本文以断路器灭弧系统为研究对象,重点研究二维物理场的自动剖分问题,以趋正三角形剖分为目标,提出一种改进波前法的自适应算法。采取均匀离散和滑移边界的渐变离散相结合的策略,以最小内角最大为主要约束条件提出了单元的动态生成模式,进而得到剖分的局部最优方案。利用循环队列存储剖分孔洞并通过再剖分方法有效的解决漏剖问题。提出一种涟漪模型改进了Laplacian光滑技术,优化了结果中出现的劣质单元。实验分析表明,算法实现了高质量的剖分目标,能有效的提高物理场计算的质量和效率。

英文摘要：

A novel algorithm was developed to automatically generate the mesh in numerical simulation of the physical events involving the coupling of different fields,including the electric,magnetic,electromagnetic and fluid fields;for instance,in arc-quenching of vacuum circuit breaker.The original work included i）modification of the adaptive advancing front method,ii）boundary discretization by combining the uniform step with the gradient step to optimize local mesh generation,iii）maximizing the smallest internal triangle as the constraint condition to dynamically generate the mesh,and iv）the mesh-mission problem was solved by saving the holes region in circulating queue method and by sub-division.Moreover,Laplacian mesh-smoothing technique was modified by the ripple model to effectively optimize the geometry of ＂bad＂ tri-angle in the meshes.The newly-developed automatic mesh generation algorithm was tested in 2-D simulation of vacuum circuit breaker with high-quality mesh generation,better accuracy and higher efficiency.