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.
J(E) law: models
Introduction
This section deals with the law of electric behavior J(E) from the point of view of the models provided in Flux.
The standard models for describing the insulators and/or the conductors are presented.
Models
The numerous models provided are presented in the table below.
| Resistivity (electric) ρ … | Name of the Flux model |
|---|---|
| … infinite (null electric conductivity) | Insulator |
| … constant (constant electric conductivity) | Isotropic / Anisotropic resistivity |
| … variable (variable electric conductivity) | Isotropic resistivity |
Specific models are also provided (see table below). Their mode of use is presented in § Spatial model / user model.
| Resistivity (electric) ρ … |
|---|
| … spatial isotropic ( ρ described via spatial formula) |
| … user ( ρ described via user subroutine and personal version) |