An integral approach based on dual discretization and method of moment for the solution of static electric field

Purpose - The scope of the work is to provide an hybrid numerical technique for the solution of electric field. Design/methodology/approach - In this paper an integral approach for the solution of static electric field based on a dual discretization (DD) and on a surface method of moment (MoM) is presented. The proposed technique is applied to the solution of 3D electric field problems where different perfectly conducting bodies are placed in a homogeneous and isotropic medium. The approach is also extended to the analysis of static current field. In the presented formulation MoM is applied on a surface domain which is discretized according to a baricentrical dual scheme. Findings - The procedure has been applied to several practical cases and it represents an efficient tool for the evaluation of lumped circuit parameters as capacitances of 3D conducting bodies and ground resistance of grounding systems. Research limitations/implications - The formulation presented in the paper is limited to the calculus of electric field in homogeneous media. For future development the authors are working in order to include non-homogeneous media. Practical implications - The proposed approach aids the designer of electrical systems as large scale grounding systems or integrated circuit connections in the calculations of lumped electrical parameters. Originality/value - The originality of the paper lies in the coupling of MoM with finite formulation and DD.