HexMG: A Circuit-Model Based Finite Multi-Domain Simulator

This paper presents a new open-source simulator that aims to provide a tool to study a wide range of current and future problems requiring high-resolution distributed simula tion in engineering practice, especially in microelectronics. The problem to be studied is defined as a circuit model, which can be specified by a SPICE-like description. The simulator solves this circuit using the highly efficient Successive Network Reduction Method, optimized specifically for solving circuit models of fields discretized by the Finite Differences or Finite Volumes methods. The circuits can be extended with programmable special components: controllers, to easily implement special tasks such as hysteresis or ray tracing modelling. © 2023 IEEE.