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 The information provided may be out of date.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.

Gaussian beam as a heat source

Posted Oct 18, 2013, 5:21 a.m. EDT Plasma Physics, Heat Transfer & Phase Change, Materials Version 4.3b 0 Replies

Wiktor Bourée
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hi,

I need some help! I am using the Heat Transfer in Solids model with Time-Dependent solution (3D simulation).

My heat source at the top of my device should me similar to a laser light of 50mW with a radius of the beam of 2.5mm. The laser beam has a gaussian shape. I set two functions gp1(x) and gp2(y) with a standard deviation of 2.5mm (same as the radius of my beam).

I defined the Boundary Heat Source as follows: 0.058[W/m^2]*gp1(x)*gp2(y)

- When going to Results>Derived Values> Surface Integration, I have a value of 0.04469 but it should be my inital power of 0.050W. Why? Is there another way to define the heat source I desribed above?

Thanks in advance for your help.
Wiktor
0 Replies Last Post Oct 18, 2013, 5:21 a.m. EDT
COMSOL Moderator

Hello Wiktor Bourée

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.

Suggested Content