Change of application


Flux is applied for several domains: magnetic, thermal and electric studies.

In each domain, several applications are possible. For example in magnetic domain Flux proposed static, steady state AC and transient applications.

The user may want to change applications without change the domain, without having to redefine his entire model.

Flux offers an application conversion command that allows the user to switch from one application to another without losing any description of the model made in the initial application (geometry, mesh and physics).

Available changes

Changes of applications are authorized:

  • for applications in the same dimension (2D or 3D or Skew).
  • for applications in the same domain (magnetic or thermal)

Application changes are not implemented either for electric applications or for coupled applications.

2D magnetic application MS SSSACM MT SSSACM-TT
3D magnetic application MS SSSACM MT SSSACM-TT
Skew magnetic application MS SSSACM MT
2D Thermal application SST TT
3D Thermal application SST TT

MS = Magneto Static

SSACM = Steady State AC Magnetic

MT = Transient Magnetic

SST = Steady State Thermal

TT = Transient Thermal

MH-TT = Steady State AC Magnetic coupled with Transient Thermal

Command access

To access to the application change command, click on the menu Application and then point to Convert Current Application and choose the wished application.

The command appear only if the application of the current project has been defined.

Application change characteristics

After activating the command, a dialog box with the following characteristics to be completed:

  • enter the frequency (only for a conversion to a steady state AC magnetic application)
  • Choose the mode of save:
    • either save under the current name (loss of the initial project)
    • or save under another name (to be completed by the user)

Conversion rules

The main rules are:

  • If the region type of the original project exists in the requested application then the conversion is achieved.
  • For data conversions of complex to real type, the field will be empty, and the user will have to define it
  • In the general case, if a region in the original project is of a type that does not exist in the requested application, then it is converted to an Inactive region.
  • In the specific case of solid conductor regions, and when converting to a Magneto Static application from a Transient Magnetic or from a Steady State AC magnetic application, they are converted to magnetic non conducting regions and keep their materials. Moreover, if the solid conductor region had a magnet material and had its orientation defined in the original application, then the converted magnetic non conductinng region keeps that orientation as well.
  • The resulting circuit may contain "holes" if the original circuit contains components not existing in the target application. The user must redefine the adapted circuit.

A few limitations

The limitations are:

  • Formulas with spatial quantities are not kept, they are set to 0.
  • The conversion of sensors is not managed. Please check the formula of parameter using these sensors.
  • When converting to an application that does not support electric circuits (e.g. Magneto Static), coil conductors belonging to a circuit are converted to coil conductors with an imposed current equal to 0 A.
  • The kinematics type of mechanical sets with motion must be redefined and validated.


After a conversion, it is advised to:

  • Execute a checking of the physics
  • Check the definition of regions