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Flux 2026.1 stuck indefinitely at "Loading kernel" when starting/opening new 2D project
Hello everyone, I am a master's student in Power Electronics. I recently activated my Altair Student Edition license and installed Altair Flux 2026.1 on a new laptop. The Flux Supervisor / GUI opens correctly and shows the license as "Activated". However, whenever I click on "Start new project" (Flux 2D), the splash screen…
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Register Now: Multiphysics Investigation of Air-Gap Reduction in High-Speed PMSMs (Sept 17)
Join us for a community conversation on the impact of rotor deformation on the performance of high-speed permanent magnet synchronous motors (PMSMs). As these machines operate at increasingly higher speeds, centrifugal loading can deform the rotor and reduce the machine air gap. This session presents a simulation-driven,…
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Flux student edition license transfer to new PC
Hello, I previously activated my altair student edition license on an old computer. I have no longer access to the old computer and I have installed Flux and FluxMotor on a new PC. I am unable to activate my student license because it is still associated with the hold hostID. Could you please deactivate/reset the previous…
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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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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 either Design a Parametric Motor Model in Simlab or Import one?
I tired to create one using Solutions > E-Motor > Flux Motor > Inner magnet. Then when i go to create Outer slot it says "Please delete existing sketches to create a Outer Slot", i need both to create the 2D Profile of the Motor. Í'm i missing something? Thanks
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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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Cannot run Altair Flux Motor program
I have downloaded the Altair flux Motor program. When I try to open the program, it won't start. But I can open and run Altair Flux. I have activated my student license by downloading PSIM. I need help! Task manager screenshot and program opening screenshot is added. Thanks
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unknown error Ticket Number : #100.18.11 #100.18.10 #100.18.1 #100.18.39
I am facing Ticket Number : #100.18.11 #100.18.10 #100.18.1 #100.18.39 error.
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Seminar about parallel computation
Hi everyone, I am checking the resources that Simlab provides for parallel computation and I can not find a lot about this topic. Could anyone address me to something useful to run several (parametric) simulations simultaneously? If not, would it be possible to make a seminar about this topic, as I think that many of us…
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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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Test in SM_PM_IR_nPh and SM_PM_OR_nPh
"Test" in SM_PM_OR_nPh ans SM_PM_IR_nPh are disabled. we are unable to perform test for n-phase motors. Need support in the test of nph motor design in flux motor
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I have to format my old laptop and I have not deactivated my student license on as per the process.
I have to format my old laptop and I have not deactivated my student license on as per the process. how to reactivate again. i am urgent need for my thesis work.
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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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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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What causes System error#12 in Hyperstudy, trying to run a FluxMotor Modell?
I'm trying to open my FluxMotor model in Hyperstudy. But as soon as I click “Run definition,” “Test Models” crashes and I get the following error message: com.altair.fluxmotor.motorcommon.common.error.FmHidenException: System error#12 I've already tried re-exporting the model from FluxMotor several times, with different…
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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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Altair's live training certificate issue.
I am writing to know about my training certificate for the 3-day program titled “Getting Started with Flux Motor” conducted on 23rd, 24th, and 25th February. I have completed all the course requirements on Altair One, but the status is still showing as “Continue,” and I am unable to download my certificate. Could you…
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Upcoming Community Electromagnetics Chat: Advanced Winding Modeling and Selection in FluxMotor
Are you an eMotor designer or a FluxMotor user looking to push the boundaries of performance and make smarter design decisions? Then you won't want to miss our next Community Electromagnetics Chat Series session on February 19, 2026 at 10 AM Eastern Time. Join us for an in-depth technical session on "Advanced Winding…
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Simlab motor exportable to other Altair modules
Hello hello, I’m trying to create a motor in SimLab in such a way that it can be exported to other Altair tools (Twin Activate, Flux Motor, SimSolid, etc.). I’ve successfully created an assembly with the different parts of my motor and run a simulation. However, this assembly is not recognized as an “official”…