Altair Flux™

Electromagnetic, Electric, and Thermal Analysis

New Features

Altair Flux™ 2019.1 delivers improvements throughout the product with emphasis on design versatility, solving speed and robustness. This has been attained by improving the mesh generator and proposing new meshing options to deal with skin effects. New solving options are also available, implementing new initialization methods for transient simulations, as well as enhanced non-linear solving. 

Important at a time when machine efficiency is a concern, new hysteresis modeling capabilities offered by the introduction of Preisach’s model enables better evaluation of iron losses and remanence effects. 

More than ever, Flux efficiently deals and solve 3D complex models, and owing to its seamless connection to Altair SimLab™ process -oriented environment, workflows can be easily automated for coupled electromagnetic and vibration analysis. 

Finally, new post-processing capabilities ease designer's investigations.


More powerful 3D meshing

  • Volume elements through cutting plane visualization
  • New mesh generator type
    • Mesh layers to model skin depth, ideal for 3D eddy current simulations
    • Faster resolution & high accuracy results
New 3D meshing options for skin effect representation for 3D eddy current simulations


Connection to SimLab process oriented environment to automate workflow for coupled electromagnetic and vibration analysis.

Straightforward connection to SimLab process oriented environment for Multiphysics couplings


Magnet demagnetization during solving process


  • Takes magnet demagnetization phenomena into account during solving process
  • For 2D and 3D transient applications
  • Offers more accuracy on typical quantities such as motor torque or electromotive force and new analysis like the evolution of the remanent flux density

Remanent flux density evolution on a magnet


New hysteresis modeling: Preisach’s model


  • Better evaluation of iron losses and remanence effects
  • Hysteresis during solving
    • Preisach static vector model (faster than Jiles-Atherton model previously introduced), available in 2D and 3D
  • Accurate and straightforward
New hysteresis modeling based on Preisach’s model


Dedicated e-Motor environment with automated tests


  • A user-friendly environment facilitating explorations to non-experts, or accelerating standard analysis to daily users
  • Automates e-Motors computations for performance mapping
  • Various maps available for efficient post-processing activities
  • Available in 2D, 3D and skew for the magnetic transient application 

Flux e-Machine Toolbox (FeMT) dedicated environment


Extended post-processing capabilities


  • Accelerated computation of iron losses
  • Results preview during solving
  • 3D curves dedicated to rotating machines
    • New post-processing capabilities for NVH analysis, magnetic pressure graphs, etc.
    • Available for time domain (time and angular position) and frequency domain (frequency and spatial order) representations
  • Import/Export context improved for Multiphysics
    • Specific contexts for thermal and mechanical coupling
    • Any Flux spatial quantity can be post-treated and exported
    • Export for 3D full device can be generated from a 2D simulation!

Extended post-processing capabilities including 3D curves dedicated to rotating machine applications


Accelerating the solving process

    • Faster convergence for transient solving
      • New initialization method in transient solving and automatic time step adaption
    • More reliable and robust transient non-linear solving
      • New relaxation method for non-linear solving and automatically switch from the Newton-Raphson to the fixed-point method

And also:


    • New user modes giving early access to new features and specific expert functionalities
    • Enriched library of examples available from supervisor
    • New macros to accelerate your daily tasks and access advanced functionalities