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 The information provided may be out of date.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.

Undefined value found.

Posted Mar 26, 2012, 7:50 a.m. EDT RF & Microwave Engineering Version 4.2 3 Replies

Ma Jun
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello,

when I solution emw, it has a error :
Undefined value found.
- Detail: NaN_or_Inf_found_when_solving_linear_system_using_SOR

what's this message meaning ?
Thank you!

3 Replies Last Post May 7, 2013, 4:17 p.m. EDT
Jaap Verheggen
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Mar 26, 2012, 10:59 a.m. EDT
The first thing to do is to check the log file.
The first thing to do is to check the log file.
Ma Jun
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Mar 27, 2012, 6:24 a.m. EDT
Ok, I will check that, and thank you!
Ok, I will check that, and thank you!
Zahra Mardy
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago May 7, 2013, 4:17 p.m. EDT
Hi Jaap,

I am simulating a nano antenna in RF module and I get this error:

Undefined value found.
- Detail: NaN_or_Inf_found_when_solving_linear_system_using_SOR

I also simulated the same model in 2D axisymmetric with the same frequency and the results were fine. Since I needed to use a different E-field as my source and the model was not symmetric anymore, I had to use 3D simulation. Moreover, I had some difficulties in meshing but I finally found a way to do the meshing without any errors. However, I only can change my mesh elements a little.

Since I used very dense meshes, do you know why I see this error? and how I can check the log file?

Thank you.
Hi Jaap, I am simulating a nano antenna in RF module and I get this error: Undefined value found. - Detail: NaN_or_Inf_found_when_solving_linear_system_using_SOR I also simulated the same model in 2D axisymmetric with the same frequency and the results were fine. Since I needed to use a different E-field as my source and the model was not symmetric anymore, I had to use 3D simulation. Moreover, I had some difficulties in meshing but I finally found a way to do the meshing without any errors. However, I only can change my mesh elements a little. Since I used very dense meshes, do you know why I see this error? and how I can check the log file? Thank you.

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