Menu

Discussion Forum

New Discussion
Filter

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Voltage Induced in a Coil by Moving Magnet

Posted Apr 18, 2013, 11:41 p.m. EDT Low-Frequency Electromagnetics, Mesh Version 4.3 6 Replies

Wanfeng Huang
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi,
I am trying to learn how to use moving mesh. And I created a project same as "Voltage Induced in a Coil by Moving Magnet", which can be found in Comsol website. But the problem is: when I run it, an error always occurs like: Nonlinear solver didn't converge...

I am very sure I follow every instruction from the Documentation. So, does anyone get this model run?
And I have a question about the "study settings" described in the documentation, in which it is stated that: Step 1: Stationary; Step 2: Time dependent...' Could anybody show me more detail about this part? Thank you!

My comsol version: 4.3
6 Replies Last Post Nov 10, 2014, 7:51 a.m. EST
Lingling Tang
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago May 3, 2013, 9:32 p.m. EDT
First, as I know, this is a model used in COMSOL 4.3a, not 4.3. So, it may be your code version is not the latest.
Seconly, this model can be solved correctly when I follow the instruction document. I also faced the "Nonlinear solver didn't converge." problem once, but in the end I find that is because I forget chose one boundary.
Thirdly, the "study settings" is also mentioned in the document: the paragraph above "Step 2; Time Dependent", and it said "Time Dependent study automatically takes the initial values for the vector potential from the stationary solution"
Good luck!
First, as I know, this is a model used in COMSOL 4.3a, not 4.3. So, it may be your code version is not the latest. Seconly, this model can be solved correctly when I follow the instruction document. I also faced the "Nonlinear solver didn't converge." problem once, but in the end I find that is because I forget chose one boundary. Thirdly, the "study settings" is also mentioned in the document: the paragraph above "Step 2; Time Dependent", and it said "Time Dependent study automatically takes the initial values for the vector potential from the stationary solution" Good luck!
Wanfeng Huang
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago May 4, 2013, 5:09 p.m. EDT
Thank you! Yes, I am using comsol 4.3 which might be different from 4,3a.

So, I have two questions: 1.when you come to "STUDY" setting: for step1, you put a "X" to moving mesh, but do you need to put a "check" for Magnetic fields? 2. Could you please tell me the settings for step 2? i.e. are both of the two parts be checked or one "X" and one check?

Thanks a lot!
Thank you! Yes, I am using comsol 4.3 which might be different from 4,3a. So, I have two questions: 1.when you come to "STUDY" setting: for step1, you put a "X" to moving mesh, but do you need to put a "check" for Magnetic fields? 2. Could you please tell me the settings for step 2? i.e. are both of the two parts be checked or one "X" and one check? Thanks a lot!
Lingling Tang
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago May 6, 2013, 4:02 a.m. EDT
In step one, you add a “×” to "moving mesh",and leave the "magnetic fields" no changed, ie “√”.
The settings for step2 is both two parts be checked, ie “√”.
Good luck!
In step one, you add a “×” to "moving mesh",and leave the "magnetic fields" no changed, ie “√”. The settings for step2 is both two parts be checked, ie “√”. Good luck!
Wanfeng Huang
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Jul 2, 2013, 3:25 p.m. EDT
I know it is a little late~ But big Thanks！
I know it is a little late~ But big Thanks！
Lingling Tang
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Jul 4, 2013, 5:46 a.m. EDT

You are welcome, and wish we may have chance to exchange ideas in the future!
You may contact with the email: thomas_nust@sina.com
You are welcome, and wish we may have chance to exchange ideas in the future! You may contact with the email: thomas_nust@sina.com
Rajat Kant
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 10 years ago Nov 10, 2014, 7:51 a.m. EST
sir, i am following the same steps. i am getting no error but the problem is that there is no induced voltage. can you tell me where i am wrong?
sir, i am following the same steps. i am getting no error but the problem is that there is no induced voltage. can you tell me where i am wrong?

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content