Time-Domain Geometric Eddy-Current Formulation for Hexahedral Grids

摘要

The aim of this paper is to present a 3-D time-domain eddy-current $A$ formulation based on the discrete geometric approach (DGA) over unstructured and nonorthogonal hexahedral dual grids. The resulting differential algebraic system of equation, solved by means of a singly-diagonally implicit Runge–Kutta (SDIRK) variable step-size solver, leads to very accurate results at reduced computational costs, as shown by numerical analysis.