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(Flux2D) Translation Transient in Linear Induction Motor - Difficulties
Dear ones, I'm having considerable difficulty to simulate a translation transient in double primary linear induction motor with solid secondary (Flux2D). I already had some progress in "first steps", that is, electromagnetic simulation in steady state AC. All good so far. However, when I intend to take the next step -…
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Simulation in Altair SIMLAB hangs after 4 days
Hello, I am running a very long simulation on Altair SIMLAB where I use parallel processing to speed up the computation time. Nevertheless, after 4 days my simulation stopped working and hangs, while not giving any error for this issue. I am running a DOE and already 1000+ have run successfully, but then the remaining runs…
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Request for Webinar: Unlock Fast & Easy Axial Flux Machine Simulation with SimLab
Hi everyone I am highly interested in watching the recorded webinar titled "Unlock Fast & Easy Axial Flux Machine Simulation with SimLab". Unfortunately, I haven't been able to access the direct link or the video recording through the standard resources. Could you please guide me on how to access or watch this specific…
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How to load Overlay in FluxV2026.1?
Hello, as I was trying to learn SRM motors from your example I came across this F2D_AN_SRMMotor_stepbystep file which I wanted to follow but the issue is the pdf is build around the older version of software and in the newer version of software I'm unable to find the Extensions tab from where I can load the overlay. Could…
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How to extract magnetic field at a specific point defined by coordinate away from a magnet?
I am modelling this in ALtair Simlab using 3D magnetostatic analysis. Problem statement: Extract magnetic fields at 1, 2, 3, 4, 5, 6 mm airgaps from a magnet. I don't want to use existing nodes in the mesh rather I would like to define points using coordinates and extract magnetic fields at those points. I would also like…
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How to save/export geometry figures/2D & 3D graphs form Altair flux 2D in tiff/PNG format
I am using Altair Flux 2D and would like to save or export geometry figures, field distribution plots, 2D graphs (such as torque, back-EMF, and magnetic pressure), and 3D visualization. I want to save/export the results in high-quality image formats such as TIFF (.tif) or PNG (.png).
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Can electromagnetic forces from Flux be mapped to ANSYS Mechanical?
I am working on a motor vibration / structural analysis workflow. My goal is to compute electromagnetic forces in Altair Flux, and then apply those forces as structural loads in ANSYS Mechanical. I understand that the standard Altair workflow is usually Flux → SimLab / OptiStruct for motor NVH analysis. However, I would…
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Unable to export mesh support file for Flux in SimLab motor NVH example
Hello, I am following the Flux-SimLab / Flux-SimLab-OptiStruct Electric Motor NVH example. At the SimLab mesh export step, the tutorial says to select the stator tooth faces and then use: Advanced > Trials > Flux This should create the mesh support file: Mesh_SimLab_ForFlux.fem However, in my case the .fem file is not…
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Altair Flux 2023.1 crashes after creating 2D-Curve
Description: Hello, I'm doing the Tutorial: Inductance Computation (6 Magnetostatic Non-linear case) (with my own geometry, everything else is the same as in the tutorial) There are 3 ways described to compute the inductance. Linear Inductance Energy Inductance Local Inductance For some reason my Flux crashes every time…
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How to extract S-Parameters for Shunt Capacitor in SimLab?
I am working in Simlab and have a very simple cylindrical "air" capacitor. It's comprised of: Outer housing with ID = 6.00 inches and a thickness of 0.125 inches Solid inner conductor with OD = 5.00 inches that's it, all suspended in air. I am able to extract s-parameters from the solution parasitic extraction, however…
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Saving solved 3D EM projects in SimLab 2026
Hi everyone, I am currently working with SimLab 2026 and Flux 2026 for a 3D Electromagnetics simulation, and I have two questions regarding the data workflow and saving results. 1. Saving Solved Projects in SimLab: What is the correct procedure to completely save a solved 3D project directly within SimLab 2026 so that the…
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Iron Losses Computation Interpretation on Flux2D
Description: I have some problems to interpret my results. I use Flux2D to compute Iron Losses in a motor that I have and i have export to Flux2D thanks to FluxMotor. The results of the Iron Losses computation made with Bertotti Model are given in watt (W), but I don't understand how to get the full losses of the motor. As…
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Prise en compte de DOPTPRM DISCRETE | couplage FLUX - Optistruct | Optimisation topologique
Hello, I am reaching out because I am encountering an issue during my topology optimizations. To give some context, I am coupling Altair Flux with OptiStruct to perform a magneto-mechanical topology optimization. The coupling works correctly and I am able to obtain several results. However, my goal is to modify the…
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How to reduce computation time in Simlab
Hi everyone, I am running a big simulation in Simlab and it takes a huge time to finish as it needs to go through several parameters to be completed. Does any of you have a suggestion on how to speed up the computation time? I already set the number of the cores to the maximum, but I still do not see a noticeable…
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Synchronous Machine: Short Circuit Current/Open Circuit Voltage
Is it possible to plot: Short Circuit Current / Open Circuit Voltage against the Field Current in Altair Flux/FluxMotor ?
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Sine Wave working point error
I have noticed that every time I want to run a sine wave I-Ψ-N simulation in Accurate computation mode, I get the following error: The test Working point, Sine wave, Generator, Current-Control angle-Speed failed due to the following problem: Cause : Failed to execute the flux bloc with name…
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Flux 2D to e-Machine Tool: laminated region with non-uniform material assignment
Hi, I am working with a Flux 2D model that I want to export to the e-Machine Tool. The issue is that one laminated rotor region contains local subregions with a different material assignment, so the laminated region is not uniform. e-Machine Tool seems to require a uniform material in laminated regions for iron-loss…
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Definition of Motor Inductance in Circuit
Hello everyone, I see that in tutorials an inductance in the motor circuit is defined but I do not understand how this is calculated. Could you please provide a help in calculating this value for an axial-flux motor? The inductance changes with the rotor position, so how could I already give it as input in the circuit…
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Calculate iron losses in Flux2D via Python Script
If I run the script at the bottom in Flux2D via the PyFlux Command prompt, a curve is made with the name "CURVE_LOSS_REGION_V101". If I extract the curve, I obtain the data I need. If I embed this piece of code in a Python script, the code runs smoothly and the script is ran without errors. However, the actual curve is not…
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Reporting of two bugs in Simlab electromagnetics
When I used imposed current with a parametrized current that should change over time, the current does not update over the rotation. It does with a circuit tho. When I go on solver settings→ Results request and a circuit is defined in my case, the software crashes. It does not crush if the current is given through the…
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Exterior acoustic simulation of Motor to predict SPL using Surface velocity data a input?
Hi, I have a surface velocity data of E-motor/Engine generated by third party MBD solver in .pch file format. I would like to use this data as a excitation to predict the exterior noise at 1m distance microphones. I have looked at the documentation of IE, RADSND & APML methods in optistruct. Surface velocity required for…
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Flux cannot start due to license error
Hello, I’m having a license issue and Altair Flux cannot star Flux was working normally before, but now it fails to launch due to a license error.
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Best way to parametrize electric motor?
Hello, I am designing an electric motor and I am looking for the best solution to parametrize my model in order to study the effect of several geometrical lengths in my design. At the moment I am working with SolidWorks, but SimLab does not allow me to change its geometry in a parametric way. Therefore, every time I want…
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What does this symbol mean?
Hi, When I volume mesh my body, I get that a volume gets this symbol after meshing. Could someone understand me what it means? All other bodies get a 3d shape next to their name, but only the air of my motor (cavity1) gets this blue 2d shape next to its name.
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Circuit Designer not working in SimLab v2026
Hello community, today i tried to follow some tutorials for SimLab with Flux for transient Simulations. Therefore it is needed to use the Circuit Designer to setup the Current Source. Unfortunately it is not possible to move, edit by double click, delete, wire or move the Circuit Components. Things I already tried without…