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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...
Results post-processing: software aspects
2D curve
2D curve: Integral

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.

2D curve: Integral

Introduction

The user can represent the result of integrals calculated from functions of spatial quantities or input/output parameters in the form of curves.

Operation

The curves of integrals are created as follows:


Stage	Description
1	The integral of a 2D curve command is applied to an elementary curve or a set of elementary curves of the 2D curve entity.
2	The function representing the integral of each analyzed curve is constructed by the calculation of the integral at each point of the interval of the curve definition.
3	The new elementary curves are added to the already available curves of the 2D curve entity.

Principle

The integral is calculated starting from the function represented by the analyzed curve. The integration is performed following the trapezoid rule.

Given a curve representing the function f(x), the calculation of the integral in each point is carried out as follows:

The number of points of the curve representing the integral is the same as that of the initial curve.

The ordinate of the first point of the curve representing the integral is always null.

The abscissa values a and b in the integral must be strictly increasing ones (b>a).

Trapezoid method: reminder

The trapezoid rule is a method to numerically calculate the integral: .

The principle of the trapezoid rule consists in approximating the region under the graph of the function f(x) by a trapezoid and calculating its area:

To calculate the integral more accurately, the interval of integration a,b is split into n smaller subintervals and the method is applied to each of them.

Compute the integral of a 2D curve

To compute (and display) the integral of a 2D curve, see following steps:


Step	Action
1	In the menu Curve > 2D curve (…): click on Integral of a 2D curve
→	A selection box opens
2	In the selection dialog, choose the 2D curve entity
3	In the integral of a 2D curve dialog, choose the elementary curve(s) to be analyzed
→	The curves of the integral are calculated and displayed in the 2D curve sheet.