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Andoni Garcia

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About Andoni Garcia

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  1. Hi, I've been simulating with that solid conductor (secondary terminal of a transformer) WITHOUT cooling holes and coupling the primary winding. I didn't have any problems at all. Secondary terminal: The problem arised as soon as I simulated the same system, using the secondary with the cooling holes instead of the solid one: I've followed the same steps that I'd done with the solid one. I checked the physics and it advises me to create the Electric Loops (as other occasions), but when I run the solver, unlike other times it stops changing the warning to an Error: You can get the file here below : TRAFO_PROTOTYPE.7z
  2. Good morning Abdessamed, To avoid future problems, I would be so grateful if you could explain me what is a "Singular Matrix" a little more in depth. When can I localise this error? On the one hand, I can understand that Flux can´t solve errors made by geometry, or a wrongly assigned physics, but a mesh error... Wouldn't it only influence in calcules precision? Sorry but I'm in two minds. Thank you so much for your support.
  3. Hi Abdessamed. Okay, I didn't done any electrical loop but the problem persist. This is the error message from the solver. I've done all that you've adviced before solving, do you get results with the file I'd sent? (Create a face in the middle of the geometry, Complete Infinite Box). I'm drawing through the "Modeler Context", I don't think so but is there any construction error there? Never tire of repeating, thank you so much.
  4. These are the steps I've done: - I created the tube geometry (body & holes) - Clicked "Complete Infinity Box" & Assign volume regions - Do the meshing - Create the circuit & assign terminals - Physical check: When using Electric Loop, I made the following steps: "Automatic creation of cuts", "Electric Cut creator" (ElectricLoopCut_3) & once again checked physics: After all this, it is necesary to create once again Electric Loops? Here it is this file: Tubo_12.FLU.7z Thank you, once again. Andoni
  5. OK! Could you specify please why have I to do that? Why is it not enough just creating a infinity box? Perfect. In XZ and YZ planes? I started drawing this tube due to the fact that I didn't get solve some errors that came to the cooling holes of this geometry. I've noticed that the error arises when I create the upper horizontal hole of the tube that connects the vertical holes, the automatical detection of cuts, doesn't create all the detected holes, so next to this I created the missing electric loops. Finally I checked the physics and it seems that this last step breaks the connection between the 2 terminals, i.e., it detects only 1 terminal. I would like to add that before creating this hole, the automatic creation of cuts does create all the holes of the sistem, I don't need to appeal to the "manual" Electric Loop creator. I'll read and try all your advices, let's see if I get a solution. Thanks lot Abdessamed. Best regards, Andoni
  6. Here it is. Thank you Error_Tubo.FLU.7z
  7. Hi, I'm doing some cooling orifices to a solid conductor using "Modeler Context" and when I use "Automatic Creation of Cuts" (of Electric Loops), it creates less cuts than the identified ones. What can I do in this situations? Modifying the geometry would be the only solution? Thanks
  8. I have used upon it, I know not how many times... I'd totally forgotten Sorry for the inconvenience, and thanks for your quick response, as ever.
  9. Hi, I would like to draw a solid conductor made by 2 extrusions in SKEW. The problem arises when I draw the second solid just supported in the base, and when I close the modeler FLUX detects intersections between solid objets. I don´t know how can I solve this problem... Thanks
  10. Dear sir/madame, This topic arises using the "Computation / On physical Entity / Compute" tool in a solid conductor. Im my humble experience with this software, I've been wrong on what it means the Active Power & the Joule losses: Until now, the calculated active power was higher than the joule losses that is why I thought that the Joule Losses were a fraction oc the active Power. The thing is that in some actual simulations, I witnessed the opposite. As a consequence, I would like to know how flux calcules and what takes into account in this two losses. Best regards, Andoni
  11. Hi Balaji! Until recently I used to made the same slip. When you define the Infinite box I learned that (if I am not mistaken) the influence of the parameters of the defined geometry doesn´t have to collide with the infinite box internal limit. I, for one, display the isovalues of the magnetic flux density and if the darkest colour is touching the infinite box I consider that it's correctly defined as indicated in the next picture: (Yes, this is a 2D simulation, but I do the same with the 3D) Best regards, Andoni
  12. Thanks for your kind answer Alejandro. I've been working just on that with the Modified Bertotti model: I took one core and I calculed experimentally the iron losses on 50Hz & 1kHz. Afterwards, with those values I obtained the Modified Bertotti modified for each frequencies. The issue is that, if you draw the real B(P) curve (1kHz) against Modif Bertotti f parameters obtained in 50Hz curve using for 1kHz, the fuction deviates 14% from the real values. So althought it seems to be the most viable option, it wouldn't be a precise solution.
  13. Hi everyone, I´m simulating the magnetic behaviour in a varying frequency on some cores but I've got a restriction. I have understood that, if I want to simulate a core in a certain frequency to get core losses, I would have to introduce the B(H) curve in the material expecifications (for the same frequency). I use to fill the "Isotropic Spline Saturation" gaps with "Sine wave magnetic field", adding the 6 Modified Bertotti losses coefficients. But what if I got B(H) information for only 1Hz - 10kHz range? How can I calcule the losses for 150kHz? Is there any way to draw upon of Steinmetz or another technique in FLUX? Thanks
  14. Thank you Abdessamed! And what's the reason of this error, and why does solve it with this change?
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