Since version 2026, Flux 3D and Flux PEEC are no longer available.

Please use SimLab to create a new 3D project or to import an existing Flux 3D project.

Please use SimLab to create a new PEEC project (not possible to import an existing Flux PEEC project).

/!\ Documentation updates are in progress – some mentions of 3D may still appear.

Magnetic non conducting regions

Introduction

Magnetic non conducting regions in Flux allow representing bulk magnetic cores (e.g., ferrites, sintered or pressed iron powders) without taking eddy currents into account, i.e., only the B(H) characteristic in the material definition is considered, while the J(E) law, if defined, is discarded.

When a Jiles-Atherton or a Preisach model is used as B(H) characteristic in a Transient Magnetic solution, these regions enable to account for static hysteresis only (not the dynamic phenomena) and allow getting the hysteresis losses (not the full iron losses) by à priori approach.

How to create it in a Flux project

In Flux 2D and in Flux Skew, the magnetic non conducting region is a face region, while in Flux 3D it becomes a volume region. These regions are available in all Magnetic applications: Static, Transient and Steady State AC.

This region may be created as follows:

  • while creating a new region, select Magnetic Non Conducting Region in the drop-down menu Type of region;
  • then, provide a material for the region.