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.

Definition of the Electrolysis application 3D

Electric point of view

From the electrical point of view, two types of computation are proposed in Flux. These two computations are presented in the table below.

Simplified or incomplete computation (Without computation of the current in the metallic conducting regions) Complete computation (With computation the current in the metallic conducting regions)

Assumptions:

  • computation without taking into account the current density in the structure
  • the structure introduced in the electrolyte is represented by the boundary conditions

Assumptions:

  • computation taking into account the current density in the structure
  • the structure introduced in the electrolyte is represented by thin regions and boundary conditions

Computation:

  • Computation of the electric potential in the electrolyte

Computation:

  • computation of the electric potential in the electrolyte

    ⇒ computation of the normal component of the current density in the cathode (electrochemical interface)

  • computation of the electric potential in the structure while imposing the previous normal component of the current density over the cathode (electrochemical interface),

Results:

  • electric potential (VEL) and current density in the electrolyte

Results:

  • electric potential (VEL) and current density in the electrolyte
  • electric potential (V) and current density in the structure

The electric potential in the electrolyte (VEL) is generally called UEP (Underwater Electric Potential)

Magnetic point of view

From the magnetic point of view, the user has the possibility to compute the magnetic field generated by the current distribution (Flux option: With the computation of the magnetic field due to the computed currents). The magnetic field is computed in all the regions, even in those that are not active. This computation is valid if the metallic structure is non magnetic.

The magnetic field created in the electrolyte is called CRM (Corrosion Related Magnetic Field)