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Flux Applications for Electric Field Simulation

Powerful tools for electrical field studies

Maintaining high voltages and avoiding dielectric breakdowns are very important challenges in electrical engineering. Engineers need advanced simulation solution while designing MV & HV equipment like insulators, circuit breakers or power transformers.

Altair develops robust tools to help with electric field simulation.

  • Flux™ – for the study and mapping of electrical fields in devices. Different applications for different studies: Electrostatic, Transient Electric and Steady State AC Electric.

  • HyperStudy® – for performance optimization using Design of Experiments

  • PBS Works™ for distribution of computation

Intuitive and efficient handholding for geometry

Flux features numerous tools and capabilities which allow for fast and accurate computation of the electric field in a device. Dedicated to 2D and 3D electric finite elements analysis, Flux enables the simulation of electric behaviors in static, harmonic and transient states.

The entire workflow is intuitive with dedicated tools for the import, the generation and the healing of complex geometries. Thanks to these tools, geometry can be ready to mesh and solved avoiding time consuming healings by hand.

Flux benefits

  • Advanced import & export capabilities from various formats (IGES, STEP, CATIA…)

  • Sketcher and modeler, geometry simplification using symmetries, defeaturing and healing capabilities

  • Full parametric capabilities (geometry and physical properties)

  • Automation capabilities using macro and command file

Dedicated tools for meshing

Flux also provides efficient meshing tools to obtain the best possible mesh in a few iterations. Thanks to the adaptive mesh, Flux refines the mesh automatically during solving to converge to a very efficient mesh, leading to the most accurate results.

Users can choose a mapped mesh or tetrahedrons or even mix both meshes in the same project. This allows time saving by relaxing the mesh with tetrahedrons on a given area, and at the same time keep a regular and thin mapped mesh on sensitive parts of the geometry.

In other words, Flux mesh allows for the reduction of the computation time and increases the quality of results on a same project.

Electric field and potential mapping in Flux

Flux postprocessor allows easy access to a tremendous amount of results such as:

  • Electric quantities in all the geometry (field, voltage...)

  • Capacitances

  • Spectral analysis of any quantity

  • Computations on various supports (points, paths, grids, groups of regions...) and in various formats (color shaded maps, vector plots, curves, animations, tables exported to Excel®…)

Thanks to Flux multi-parametric solver, all results can be given on a same simulation for many values of geometric and physical parameters, such as input currents, insulator geometry, and dielectric permittivity.

New advanced tools and streamer criterion

Flux provides new tools for advanced usage of the postprocessor, such as the streamer criterion. This very efficient tool allows the prediction of the voltage levels causing a breakdown and provides the path of the possible breakdowns. Thanks to this feature, the user can easily see where the geometry needs to be improved. Possible breakdown path detected by the streamer criterion between two charged wires.

Creating path along field line is also easier with the new dedicated tool.

Transient electric study

With this new type of study available, many phenomenon’s can now be simulated in Flux. From the lightning test on a line to the change of polarity in a submarine cable, any transient electric simulation can be done in Flux!

Design exploration & optimization

To figure out the best design with respect to specific criteria (objectives, constraints), it is needed to test different design configurations, to explore the design space.

An efficient way to do that is to leverage in the automatic Flux connection with Altair HyperStudy, the multi-disciplinary design exploration & optimization tool. Featuring state-of-the-art methods (design of Experiments, Optimization, Meta-modeling) in a user-friendly GUI, HyperStudy helps engineers to design high-performance products and be competitive.

Connected to Flux, HyperStudy creates a set of “smart” Flux designs, evaluates these designs automatically and guides users to gain insight from the data obtained. It is possible to screen out the less influential parameters; to figure-out perform trade-off studies; to access the optimum solution reliability or to perform robust optimization. The HyperStudy - Flux connection can be efficiently used to minimize the cost and volume of an insulator, increase or reduce voltage level in a given area, and minimize distances between two points.

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