Integral Equation Domain Decomposition Method Based on the Out-of-Core Solver

A integral-equation domain decomposition method based on the blocked out-of-core iterative solver is presented for accurately analyzing large-scale electromagnetic scattering objects. The proposed method is based on the matrix partitioning, which decomposes the original large complex matrix into several small sub-matrices constructed from sub-problems. Then, the Krylov subspace method based on the out-of-core strategy is used to solve the matrix equation block by block. The continuity of the electric surface current across the boundary between adjacent sub-domains is enforced by the proposed scheme. Numerical examples demonstrate the accuracy, effectiveness and robustness of the proposed approach.