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numeric multiturn coil from sweep object

Posted 24 nov. 2022, 01:23 UTC−5 Electromagnetics, Geometry 2 Replies

Gilles Quemener
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Hi,

Currently I am trying to simulate a rather simple homogenized multiturn coil as shown in the attached .mph file. To build this coil, I have swept a filleted rectangle along a quarter of a rounded rectangle curve and then I have made a union with successive mirrored images of this sweep shape. I am wondering if this builds the coil correctly. There is a face at the junction between 2 quarters which I used as input for the coil analysis, but I am wondering if this is not the remaining of the face used for the sweep. I do not use any symmetry as in my final model they won't be any.

Unfortunately, when running the study, I receive the following error message and I don't know how to solve the problem.

  • Feature: Stationary Solver 1 (sol3/s1) Failed to find a solution. In Segregated Step 2: The relative residual (0.85) is greater than the relative tolerance. There was a warning message from the linear solver. Iterative refinement triggered. Returned solution is not converged. Not all parameter steps returned.

Thanks a lot for any help,

Gilles

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2 Replies Last Post 25 nov. 2022, 02:40 UTC−5
Mark Harradine
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Posted: 2 years ago 24 nov. 2022, 06:23 UTC−5
Updated: 2 years ago 24 nov. 2022, 06:24 UTC−5

Are you sure you don't want to use symmetry? The coil structure is symmetrical and you can simulate your coil using 3 planes of symmetry. The Physics (i.e. the current direction is not symmetrical, but that can be handled

I have made a few tweaks, see attached...

I simplified the mesh, made the infinite element domains swept, deleted the construction line used for the initial sweeped geometry... not sure which of those fixes made it solve without a hitch, but it solves very quickly now.

Edit: the attached file is version 6.1

Are you sure you don't want to use symmetry? The coil structure is symmetrical and you can simulate your coil using 3 planes of symmetry. The Physics (i.e. the current direction is not symmetrical, but that can be handled I have made a few tweaks, see attached... I simplified the mesh, made the infinite element domains swept, deleted the construction line used for the initial sweeped geometry... not sure which of those fixes made it solve without a hitch, but it solves very quickly now. Edit: the attached file is version 6.1

Attachments:

Gilles Quemener
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Posted: 2 years ago 25 nov. 2022, 02:40 UTC−5

Hi Mark,

Many thanks for solving the problem(s). I agree that in this test, it would be better to use symmetries, but in my final study, I shall add other geometrical shapes which shall break the symmetry of the system.

Once again thanks a lot for fixing this !

Gilles

Hi Mark, Many thanks for solving the problem(s). I agree that in this test, it would be better to use symmetries, but in my final study, I shall add other geometrical shapes which shall break the symmetry of the system. Once again thanks a lot for fixing this ! Gilles

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