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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...
Dedicated couplings
Several dedicated couplings are implemented in Flux to, carry out vibro-acoustic studies, magneto-thermal studies and more.
Data import/export context
Data supports

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.
  - Data import/export context
  - Magneto-thermal coupling
- 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.

Data supports

Support types

Surface regions: defined by Flux entities of n-1 dimensions (in 3D: faces, surface regions, 2D grids and cut planes; in 2D: lines, line regions and spatial paths)
Volume regions: defined by Flux entities of n dimensions (in 3D: volumes, volume regions and 3D grids; in 2D: faces, surface regions and 2D grids)
Imported: defined by an external mesh imported via a file (OptiStruct *.fem file or Nastran *.bulk/*.nas file)

Construction options:

Associate a region for the computation: this enables a computation on the selected region, including the contour of this support.
Mesh extrusion: this enables to extrude the mesh of a support in order to obtain a support that will be compatible with a 3D model. This option is only available in 2D, for volume and surface type supports. When an extrusion is needed, the user should enter the number of mesh elements to obtain the discretization in the extrusion direction.
Rebuild the full device: this enables to rebuild the mesh of a support in the image domains when a project contains symmetries or periodicities. This option is only available for volume and surface type supports.

Visualization options:

Color: color choice
Aspect: the user can choose among different graphic representations

Evaluated information

When the user creates a support, he can access to some information concerning the support characteristics. The user can access to these pieces of information in the Evaluated information tab of the Edit support box.

Information on the support mesh includes the number of nodes and elements (1D, 2D & 3D) of the support mesh.
The specific collections compatible with the support list (see Data collection section).

Export a support

The user can export a data support into different formats. These exports can be accessed via context menu (right click) on the data tree support entity or via the menu Data support > Export a data support > ... :

Export mesh in OptiStruct format: generates a *.fem file, formatted and using OptiStruct structure to define the mesh. This file is compatible with Nastran standards.
Export nodes coordinates: generates a *.DEX file, formatted and tabulated, with mesh nodes coordinates (in meters, in the global coordinates system)