三维电磁散射问题区域分解技术研究进展

区域分解算法（domain decomposition method，DDM）是实现大规模电磁散射问题求解的有效途径，其易于并行，与非共形技术结合后，可进一步降低实际应用中目标建模与网格划分的难度，近年来在计算电磁领域引起广泛关注.本文介绍了电磁计算领域有限元法（finite element method，FEM）和积分方程法区域分解技术的研究进展，以及它们在合元极技术中的应用.最后，对区域分解合元极技术当前仍然存在的挑战和未来发展方向进行了讨论.

The progress of domain decomposition methods for 3D electromagnetic scattering problems

The domain decomposition methods(DDMs) have been recognized as the most efficient way for solving electromagnetic scattering by large-scale objects. Combined with the non-conformal technology, they can further reduce the difficulty of modeling and meshing targets with complicated geometry in practical applications, thereby have attracted extensive attention in the field of computational electromagnetics in recent years. In this paper, recent progress of DDMs in finite element method and the integral equation method is introduced respectively at first. Then, an overview of the DDMs development of hybrid finite element boundary integral-multilevel fast multipole algorithm(FE-BI-MLFMA) is given. Finally, a short discussion is drawn to the present challenges for domain decomposition based FE-BI-MLFMA.