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.

Unable to change the frequency of the model due to some error

Please login with a confirmed email address before reporting spam

Hi guys,

I need some help regarding some kind of error message received, I had been doing the modelling regarding the heat radiation of a cell phone and wireless router to the human head/body. I am currently using the model that is already available inside the Comsol library, and whenever i change the frequency of the cell phone (PCB board) ) more than 2.3Ghz, there is a error message as shown below,

====================================================
Undefined value found.
- Detail: NaN or Inf found when solving linear system using SOR.
- Feature: Stationary Solver 1 (sol1/s1)
====================================================

Does this mean that I can't do the simulation with a higher frequency? I have search the web regarding similar problem and the solution i gotten is to change the mesh size to a finer size. But after i try it, the same error still pop out.

I really appreciate if someone can help to share their solution over here, so that others who have similar problem can learn.

Regards,
Boon Heng

0 Replies Last Post 16.01.2016, 22:57 GMT-5
COMSOL Moderator

Hello Boon Heng Goh

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

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.