Menu

Discussion Forum

New Discussion
Filtrer

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.

Heat transfert / PDE equation

Posted 18 nov. 2012, 18:35 UTC−5 Heat Transfer & Phase Change, Studies & Solvers 0 Replies

Grazia Leonzio
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I would like to draw the temperature profile within a sphere cooled outside, whose equation is as follows:

diff(T,t) = (k/rho*cp)*diff(diff(T,r)) + (k/rho*cp)*(2/r)*diff(T,r)
initial values: t=0 and 0<=r<=R T=294 K
boundary condition r=0 and t>0 -k*diff(T,r)=0
r=R t>0 -k*diff(T,r)= h*(T-269.25)

I have seen that the equation used by the model heat transfer in solids is different. What can I do to simulate my differential equation? Thank you very much for the availability.
If I use the PDE solution in general form, what initial and boundary condition I have to use?
Grazia
0 Replies Last Post 18 nov. 2012, 18:35 UTC−5
COMSOL Moderator

Hello Grazia Leonzio

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