A 3D Planar Partitioning Method for Finite Element Domain Decomposition Method

For large-scale multi-scale targets like target such as Aircrafts, ships and large-scale array antenna, the radar scattering analysis or radiation analysis with traditional numerical methods is very challenging. Domain decomposition method (DDM) reduces the solution scale and improve the solution efficiency by decomposes the original problem into smaller sub-domains. However, the convergence of the DDM is not so ideal for domain meshes of large-scale multiscale problem with the non-planar and irregular interfaces. Therefore, a 3D planar partitioning method for finite element DDM is proposed to overcome this problem. Numerical results verify the accuracy and the improved convergence of the proposed method.