Tube conductor mode: physical description


In tube conductor mode, the physical description of unidirectional conductors is automatic.

For each geometric tube created, the software creates:

  • a unidirectional conductor (with predefined physical characteristics)
  • the terminals (corresponding to the tube points)

Physical characteristics

A unidirectional conductor resulting from a geometric tube is characterized by:

  • a material: the material of the application
  • a mesh: an automatic mesh according to the reference frequency

These characteristics are default characteristics, which can be modified by the user.


The materials are electro conductive materials, characterized by their resistivity in Ω.m. They can also have a behavior of magnetic type; in this case they are characterized by their permeability in addition.

The characteristics of available materials are presented in § Choice and definition of the application. The user can create other materials.

Types of mesh

In order to mesh the unidirectional conductors, several types of discretization of the cross-section area of the conductor are provided, as presented in the table below and described in the following paragraphs.

Some discretizations require that the user defines the parameter settings, while others are automatically implemented by the Flux PEEC software.

Possibilities and methodologies depend on the section of the conductor, rectangular or variously shaped.

Manual discretization … Definition
uniform Uniform distribution (elements of the same cross-section)

Geometric distribution (smaller elements on the periphery)

(available only for rectangular cross-sections)

Automatic discretization … Definition

according to the reference frequency

adapted meshing according to the reference frequency * of the project;

it reduces the number of meshes without decreasing the quality requirements of the simulation

according to a given value of frequency

adapted meshing according to a given value of frequency, associated to the conductor;

it would be the automatic meshing of the conductor if the reference frequency was equal to this given value of frequency

* Reference frequency: frequency defined via the scenario associated with the application.

In the case of a multi frequency scenario, it is the highest frequency.


Terminals are created automatically with the automatic creation of the unidirectional conductor: an electric terminal corresponds to each tube point.