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Guidance Needed for Designing a Coil

Posted 2025年2月15日 GMT+8 17:44 Electromagnetics Version 6.2 4 Replies

Arman persia
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Dear COMSOL Community,

I am currently working on designing a coil in COMSOL Multiphysics and would appreciate some guidance on how to proceed. My goal is to model a coil and simulate its electromagnetic behavior, but I am unsure about the steps involved in setting up the physics correctly. my coil design is so complicated for me. i upload image of my coil for you in real i have this coil.

-What is the best way to design the coil geometry? Should I use a 2D or 3D model, and are there any specific tools or features in COMSOL that can help with this?

-Which physics interfaces should I use for simulating the electromagnetic fields generated by the coil? Should I use the Magnetic Fields (mf) interface, Magnetic and Electric Fields (mef), or another option?

-What boundary conditions are typically applied to such problems?

If anyone has experience with similar simulations or could point me to relevant tutorials, documentation, or example models, I would greatly appreciate it.

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4 Replies Last Post 2025年2月20日 GMT+8 13:44
Robert Koslover Certified Consultant
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Posted: 7 months ago 2025年2月16日 GMT+8 09:16
Updated: 7 months ago 2025年2月16日 GMT+8 09:18

If you want to learn all about how to build coil models, see the 20-part Course in the Comsol Learning Center, entitled "Modeling Electromagnetic Coils": https://www.comsol.com/support/learning-center/article/8251/112 . As the intro notes state: "Upon completion of this course, you will know how to properly set up, build, and compute both 2D axisymmetric and 3D models of electromagnetic coils. In doing so, you will be knowledgeable in the foundations and key aspects of building such models. You will also be knowledgeable in modeling different types of multiphysics problems for coils as well as the different features and functionality in the software that you can use to model and solve these problems." And all for free!

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
If you want to learn all about how to build coil models, see the 20-part Course in the Comsol Learning Center, entitled "Modeling Electromagnetic Coils": https://www.comsol.com/support/learning-center/article/8251/112 . As the intro notes state: "Upon completion of this course, you will know how to properly set up, build, and compute both 2D axisymmetric and 3D models of electromagnetic coils. In doing so, you will be knowledgeable in the foundations and key aspects of building such models. You will also be knowledgeable in modeling different types of multiphysics problems for coils as well as the different features and functionality in the software that you can use to model and solve these problems." And all for free!
Arman persia
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Posted: 7 months ago 2025年2月17日 GMT+8 17:01

If you want to learn all about how to build coil models, see the 20-part Course in the Comsol Learning Center, entitled "Modeling Electromagnetic Coils": https://www.comsol.com/support/learning-center/article/8251/112 . As the intro notes state: "Upon completion of this course, you will know how to properly set up, build, and compute both 2D axisymmetric and 3D models of electromagnetic coils. In doing so, you will be knowledgeable in the foundations and key aspects of building such models. You will also be knowledgeable in modeling different types of multiphysics problems for coils as well as the different features and functionality in the software that you can use to model and solve these problems." And all for free!

thanks i look to some of them before but i think my coil structure is a bit more complex than the tutorials. it's bend over and have a rectangle shape hole. i need an idea to design it or someone who can give me an insight to define me physic better.

>If you want to learn all about how to build coil models, see the 20-part Course in the Comsol Learning Center, entitled "Modeling Electromagnetic Coils": https://www.comsol.com/support/learning-center/article/8251/112 . >As the intro notes state: "Upon completion of this course, you will know how to properly set up, build, and compute both 2D axisymmetric and 3D models of electromagnetic coils. In doing so, you will be knowledgeable in the foundations and key aspects of building such models. You will also be knowledgeable in modeling different types of multiphysics problems for coils as well as the different features and functionality in the software that you can use to model and solve these problems." And all for free! thanks i look to some of them before but i think my coil structure is a bit more complex than the tutorials. it's bend over and have a rectangle shape hole. i need an idea to design it or someone who can give me an insight to define me physic better.
Edgar J. Kaiser Certified Consultant
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Posted: 7 months ago 2025年2月17日 GMT+8 21:23

Well, you won't find exactly your coil anywhere. Robert's hints should provide information to start something. In case of problems you can get back to the forum, preferably with a model. Images are not very useful in most cases.

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Well, you won't find exactly your coil anywhere. Robert's hints should provide information to start something. In case of problems you can get back to the forum, preferably with a model. Images are not very useful in most cases.
Arman persia
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Posted: 6 months ago 2025年2月20日 GMT+8 13:44

Well, you won't find exactly your coil anywhere. Robert's hints should provide information to start something. In case of problems you can get back to the forum, preferably with a model. Images are not very useful in most cases.

thanks for your reply. I uploaded a 3D model of my coil name as "untittled.jpg" before. this coil putted on a pipe . i need to study the megnetic field of this type of coil. i tried to design it easier by design a HelmHoltz coil(simple circular coil) and then use "scale" in "tranforms" to shape it like an oval but i don't know how to bend my design. i thought becuase my coil has more than 750 round of wire it's better to design a 3D model of it not a actual coil it's my fist time that i use COMSOL so i come here to ask help from experts

>Well, you won't find exactly your coil anywhere. Robert's hints should provide information to start something. In case of problems you can get back to the forum, preferably with a model. Images are not very useful in most cases. thanks for your reply. I uploaded a 3D model of my coil name as "untittled.jpg" before. this coil putted on a pipe . i need to study the megnetic field of this type of coil. i tried to design it easier by design a HelmHoltz coil(simple circular coil) and then use "scale" in "tranforms" to shape it like an oval but i don't know how to bend my design. i thought becuase my coil has more than 750 round of wire it's better to design a 3D model of it not a actual coil it's my fist time that i use **COMSOL** so i come here to ask help from experts

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