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Flux
Flux is a finite element software for low-frequency electromagnetic and thermal simulations. Both, 2D and 3D solutions are available...
Construction of a Flux project
The construction of a Flux project consists of several stages: Geometry → Mesh → Physics → Resolution → Postprocessing; with the possibility to import a CAD file, a mesh, materials...
Magnetic cores in Flux
Evaluating iron losses à posteriori in magnetic cores
LS model identification with MILS
How to start MILS

Welcome
User guide
The user guide gives information about principles and how to use Altair® Flux® 2024.1.
What's new?
See the release notes of the last and previous versions, with the necessary information on new features.
"How to" Documents
See a list of documents to understand how to use certain features.
Altair Flux Videos
Several youtube videos about how to use Altair Flux and several tip and tricks
Flux Supervisor
The Flux supervisor allows to run projects, examples, pythons scripts; to configure user preferences; to access tools...
Flux
Flux is a finite element software for low-frequency electromagnetic and thermal simulations. Both, 2D and 3D solutions are available...
- General operation
  Here is a presentation of the Flux environment; the project management, the data management, the command language, the formulas and mathematical functions.
- Construction of a Flux project
  The construction of a Flux project consists of several stages: Geometry → Mesh → Physics → Resolution → Postprocessing; with the possibility to import a CAD file, a mesh, materials...
- Physical applications
  Flux allows to model different physical phenomena, and includes various applications (magnetic, electrical, thermal and thermal coupled).
- Circuit and Kinematic Couplings
  Flux is coupled to a circuit context allowing to model the sources of the devices.Flux also allow to model the movement via a kinematic coupling.
- Co-simulation between Flux and another software
  Flux is able to couple with several softwares allowing to model mutliphysics phenomena.
- Dedicated couplings
  Several dedicated couplings are implemented in Flux to, carry out vibro-acoustic studies, magneto-thermal studies and more.
- 3D Overlay
  Flux has predefined models for rotating machines via Overlays allowing to describe a geometry, a mesh and a physics adapted to the wished machine.
- Flux API
- How to Configure the Memory in Flux?
Flux Skew
Flux Skew is a module dedicated to the analysis of rotating electric machines with skewing, allowing a straightforward geometric and physical description in 2D and the consideration of continuous or step skewing effects.
Flux PEEC
Flux PEEC is a 3D modeling module dedicated to electrical interconnections of power electronics devices. It also provides RLC extraction and generation of SPICE-like equivalent circuits.
Material Identification
The Material Identification tool is based on the Altair Compose environment and allows determining from measurements the parameters and coefficients required to create a material in Flux.
Altair Material Datacenter (AMDC)
AMDC is a comprehensive material database maintained by Altair and partner suppliers of engineering materials. Ready-to-use, Flux-compatible models may be obtained directly from this database for a growing number of materials.
Material Manager
Flux has a material manager with its own material base.The user can create his own material base and import them into the Flux models to be studied.
Flux e-Machine Toolbox
FeMt is a application in Flux dedicated for Electric Machine which permits to compute and postprocess results like efficiency maps.
Flux Examples
See the lists of examples 2D, 3D, SKEW and PEEC with all available documents and all project and python files.
Flux in SimLab Examples
See the lists of 2D and 3D SimLab examples using the Flux and Mipse solvers, with all available documents, *.slb databases and all script files.
Mementos
See a list of Memento documents to understand certain Flux features.
Macros
Flux proposes several macros enabling doing actions that are not yet implemented in Flux.
PyFlux Documentation (Beta version)
This documentation deals with the Jython script used in Flux and allows to understand the various structures of entities and functions, and use it in user scripts for example.
Flux installation guide
This document provides instructions for Flux installation on supported platforms.
Flux Starting Guide
Several short videos to start with Flux.

How to start MILS

Software requirements

MILS requires the Altair® Compose® environment to be executed. As a consequence, the user must install both Altair® Flux® and Altair® Compose® on his computer to perform an LS model identification with this tool.

Note: We recommend running MILS with the latest version of Altair Compose. Additional information and resources on Altair Compose are available online at this link.

Launching MILS without starting a Flux session

With both Flux and Compose installed, the user may run MILS as follows:

Open Altair Flux Supervisor.
Click on the Material Identification button located at the bottom of the Supervisor window. The aspect of this button is shown below:
This last action launches the general Material identification tool for Flux. To launch MILS from this environment, proceed by clicking on the button Loss Surface Model (MILS).

At this point, MILS should be loaded and its first Static Identification panel should be displayed and ready to use, as shown in Figure 1.

Figure 1. MILS static identification panel after a successful startup.

Launching MILS from the Flux environment

Alternatively, MILS may be launched from within Flux during the creation (or edition) of a magnetic material as follows:

In a project containing no results, go to the Physics menu, choose Material and then New.
In the New Material window, activate the option Magnetic property available in its B(H) tab and then select Sheet iron described by LS model from the drop-down list of material models.
In the Definition box, select User defined material from the drop-down list.
Click on the button Identify Material to launch MILS in Altair® Compose® environment.
Note: This alternative approach to launch MILS is only available in Transient Magnetic applications, either in Flux2D, FluxSkew and Flux3D.

Further reading

LS model identification with MILS

How to use MILS to generate a LS model

Panel 1: Static identification

Panel 2: Dynamic Identification

Panel 3: Overall verification

Panel 4: Model generation for Flux

MILS's input and output files formats

Bibliographical references on the LS model

Isotropic soft magnetic material: iron sheets described by LS model