Domain Decomposition Method Using Integral Equations and Adaptive Cross Approximation IE-ACA-DDM for Studying Antenna Radiation and Wave Scattering From Large Metallic Platforms

摘要: In this paper, we present a new methodology for nonoverlapping domain decomposition method using boundary integral equations and adaptive cross approximation in the frequency (IE-ACA-DDM). This paper proposes two main novelties. First, IE-DDM condition number is improved with development of formulation based on electric field equation (EFIE) implementation over entire subdomains simplification magnetic (MFIE) interfaces. As consequence, matrix–vector products significantly reduced during iterative resolution. Then, proves that ACA can be applied efficiently implemented methods. Moreover, hierarchical LU (HLU) proposed to accelerate solver. The IE-ACA-DDM very suitable resolution multiple excitations bypass low-frequency breakdown. flexibility, accuracy, efficiency are demonstrated by comparing reference solutions scaled mock-up measurements.