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 The information provided may be out of date.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.

Problem: Light Bulb with vacuum (Heat Transfer and Heat Distribution)

Please login with a confirmed email address before reporting spam

Hi,
I've got a problem and don't find a solution with Google.

I want to simulate a light bulb like it was invented long ago. Many of you might know that one of the first light bulbs ever invented had no gas but vacuum inside and the wire was made out of platinum.
Now I try to simulate this state with Comsol with a little help of the light bulb which you can find in the model library (in Conjugate Heat Transfer).
But I don't know how to define the vacuum properly. I already know that the only Heat transfer in Vacuum is radiation but that doesn't help me a lot.

Thanks for helping me

regards
René

0 Replies Last Post 23.02.2015, 09:52 GMT-5
COMSOL Moderator

Hello René Henke

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.