List of Flux 2022.1 new features

New features dealing with Environment

New features Description
New Trademark The Trademark has been changed. Altair Flux™ become Altair® Flux®.

The modification has been done in:

  • the supervisor (Help menu, about dialog boxes,…)
  • each splash screen
  • the cover page of pdf documents
  • the online documentation
  • The Help menu in Flux
Migration to Java 11 All applications Flux, Flux Supervisor, Materail Manager, FEMT used now Java 11.
Update of log4j Update of log4j from 1.2.17 to 2.17.1 due to security vulnerability.

New features dealing with Mechanical Set

New features Description
Six Degrees of Freedom

A new type of Mechanical set has been implemented to able to take into account the Six degrees of freedom of a motion.

It is now possible to apply a rotating and translating movement to the moving mechanical set at each resolution step.

Three workflows are possible:
  • Drive a "free" mechanical set with multiphysics parameters in order to co-simulate with Activate
  • Drive a "free" mechanical set with multiphysics parameters by using Flux multiphysics context
  • Drive a "free" mechanical set directly in Flux with parameters controlled by a scenario

New features dealing with Physics

New features Description
Speed-up of iron losses computing in post-processing while using parametric distributing solving. While solving a project with several varying parameters with the parametric distribution (CDE for Windows and Distribution manager for Linux), the computation of iron losses in post-processing using the modified Bertotti model or the LS model has been drastically accelerated. Note that it also affects the Import / Export context and that every data collection that will be created before solving will be collected during solving (e.g. forces data collection for a multi-speed distributed scenario).

New features dealing with Solving

New features Description
Parametric distribution for Linux The establishment of a parametric distribution in Flux for Linux OS is now possible. The distributed computing allows the user to save computation time while distributing several independent configurations of a same Flux project. For example a Transient Magnetic project may be distributed regarding differents values of parameters such as the geometrical parameters (size, shape etc...) or physical parameters (supply current values, speed...) varying in the scenario.
Upgraded Compression solver for inductive computations in Flux PEEC

The Compression solver provided in Flux PEEC for inductive calculations has been upgraded in version 2022.1. The new implementation benefits from improved matrix compression techniques that may significantly reduce the memory requirements and the solving time in the case of large Flux PEEC projects. Full backward compatibility is assured for projects that were saved or solved with the previous implementation.

New features dealing with Flux e-Machine Toolbox ( FEMT)

New features Description
Switch from User to Dynamic numerical memory mode and vice versa inside FeMT It is now possible to change the numerical memory mode used to run the test inside FeMT.
Distributed computing available on Linux On Linux, it is now possible to run a test by activating the local distribution.
Run tests through PBS (by manual Export / Import)

To save computation time, it is now possible to run tests through PBS.

New extrapolation approach for efficiency maps There is now a new map extrapolation method to obtain correct values near map borders and thus avoid obtaining non-physical values, such as negative Irms values.

Updated/New macros

Updated macros Description


This macro now supports complete motor models without periodicity.


Some terminals were not correctly connected when you open the circuit editor. The macro has been updated to correct this issue.

Updated/New Flux examples

As a reminder, all examples are accessible via the Flux supervisor, in the context of Open an example.

Examples Description

Brushless IPM (embedded magnets)

3D application note


Update of the step by step document with some fixed mistakes.
Flux-AcuSolve: Cable thermal analysis

3D Co-simulation


Update of the step by step document for Flux side, and the step by step document for AcuSolve side.
Flux-Activate: IPM motor speed control

2D Co-simulation


Example 2 to build an emotor model based on FluxMotor results has some inaccuracies. It has been fixed.
Flux-SimLab: Electric motor NVH analysis

2D Co-simulation


This example has been updated with the least SimLab version for NVH solution (motor meshing, OptiStruct solver setting)

The step by step document has been updated.
Flux-AcuSolve-SimLab: CFD analysis for e-Motor

2D Co-simulation


The studied motor is a IkerMAQ machine with air cooling system.