A Nonconformal Multi-Domain Multi-Solver Method for the Analysis of Electromagnetic Properties of Objects

In this paper, we propose a nonconformal multi-domain and multi-solver method (MDMSM) to solve the problem of time-consuming repetitive modeling of radiation and scattering in complex multi-scale models. The MDMSM is a hybrid method based on the domain decomposition framework, which is compatible with the embedded finite element domain decomposition method (FEM-DDM), non-overlapping FEM-DDM, and the boundary element domain decomposition method (BEM-DDM). This method can flexibly select the appropriate partition and calculation methods for various solution scenarios. The subdomain solution is calculated by choosing the most suitable DDM for sub-coupling calculations, and different transmission conditions are used for calculations between different subdomains. In multi-case scene calculations, we propose a superimposed inheritance calculation method to save calculation time further. We apply this method to simulate the embedded antenna array structure in complex multi-scale aircraft targets and prove its practicability and effectiveness.