How to write a PDE from spherical to cylindrical coordinates, 1D axisymmetric

Please login with a confirmed email address before reporting spam

I need to write an equation like this:

this equation it's written in spherical coordinates, I am using 1D axisymmetric so COMSOL use the cylindrical coordinates as coordinate system. I am using Coefficient Form Pde, so the form of equation is:

with

if now I set c=D I'll get:

how can I add the "r^2" terms? Thanks if someone will answare me !!


0 Replies Last Post Oct 29, 2020, 6:49 AM EDT
COMSOL Moderator

Hello Mirco Befani

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.

Reply

Please read the discussion forum rules before posting.

Please log in to post a reply.

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.