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How to build a sqaure in 2D axis symmetric geometery

Posted 25 juin 2013, 10:54 UTC−4 Low-Frequency Electromagnetics, Geometry Version 4.3b 4 Replies

Khalid Hameed
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Hello

I have got stuck in to very simple problem, I have a built a 2D axis symmetric circular plate to model my inductor and in addition I want to add a metal square late. I have to use to 2D axis symmetric to get a circular coil but when I try to use rectangle in axis symmetric it becomes circle. Can't I make a normal 2D in 2D axis symmetric or vice versa
I have attached the 3D model of what I want

Regards
Khalid

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4 Replies Last Post 27 juin 2013, 05:32 UTC−4
Edgar J. Kaiser Certified Consultant
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Posted: 1 decade ago 25 juin 2013, 12:06 UTC−4

Khalid,

a square is not axially symmetric. Just as simple as that! It is not possible to mix 2Daxial and 2Dplanar symmetry. If you need that you have to use 3D.

Cheers
Edgar

--
Edgar J. Kaiser
www.emphys.com
Khalid, a square is not axially symmetric. Just as simple as that! It is not possible to mix 2Daxial and 2Dplanar symmetry. If you need that you have to use 3D. Cheers Edgar -- Edgar J. Kaiser http://www.emphys.com
Khalid Hameed
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Posted: 1 decade ago 25 juin 2013, 14:10 UTC−4

Khalid,

a square is not axially symmetric. Just as simple as that! It is not possible to mix 2Daxial and 2Dplanar symmetry. If you need that you have to use 3D.

Cheers
Edgar

--
Edgar J. Kaiser
www.emphys.com


Thanks Edgar for your answer. I have convergence issues with my 3D model and sometimes my RAM is not enough, I have 16 GB of RAM. Apart from 3D I cann't work around this issue?
[QUOTE] Khalid, a square is not axially symmetric. Just as simple as that! It is not possible to mix 2Daxial and 2Dplanar symmetry. If you need that you have to use 3D. Cheers Edgar -- Edgar J. Kaiser http://www.emphys.com [/QUOTE] Thanks Edgar for your answer. I have convergence issues with my 3D model and sometimes my RAM is not enough, I have 16 GB of RAM. Apart from 3D I cann't work around this issue?
Edgar J. Kaiser Certified Consultant
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Posted: 1 decade ago 26 juin 2013, 04:24 UTC−4

Khalid,

in 3D you could try to model only a quadrant of the square and use symmetry BCs to save memory. If you don't need to resolve the inside of the metal (skin effect) you can use impedance BC at the metal surfaces to avoid messhing the inside of the metal parts.

In 2Daxial you can only try to replace the square by a disc.

Cheers
Edgar

--
Edgar J. Kaiser
www.emphys.com
Khalid, in 3D you could try to model only a quadrant of the square and use symmetry BCs to save memory. If you don't need to resolve the inside of the metal (skin effect) you can use impedance BC at the metal surfaces to avoid messhing the inside of the metal parts. In 2Daxial you can only try to replace the square by a disc. Cheers Edgar -- Edgar J. Kaiser http://www.emphys.com
Khalid Hameed
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Posted: 1 decade ago 27 juin 2013, 05:32 UTC−4

Khalid,

in 3D you could try to model only a quadrant of the square and use symmetry BCs to save memory. If you don't need to resolve the inside of the metal (skin effect) you can use impedance BC at the metal surfaces to avoid messhing the inside of the metal parts.

In 2Daxial you can only try to replace the square by a disc.

Cheers
Edgar

--
Edgar J. Kaiser
www.emphys.com


Thanks for your answer. Now I am building 1/4 of the model in 3D to save computational time but all the parameters associated with the model will be four times?As I am calculating mutual, self inductances and losses in the ferrites.

[QUOTE] Khalid, in 3D you could try to model only a quadrant of the square and use symmetry BCs to save memory. If you don't need to resolve the inside of the metal (skin effect) you can use impedance BC at the metal surfaces to avoid messhing the inside of the metal parts. In 2Daxial you can only try to replace the square by a disc. Cheers Edgar -- Edgar J. Kaiser http://www.emphys.com [/QUOTE] Thanks for your answer. Now I am building 1/4 of the model in 3D to save computational time but all the parameters associated with the model will be four times?As I am calculating mutual, self inductances and losses in the ferrites.

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