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.

Tangential derivatives in cylindrical coordinates

Please login with a confirmed email address before reporting spam

The below post is related to an archived discussion


Hello,

I am trying to write the surface gradient (i.e. tangential derivative) of test function in cylindrical co-ordinates.

I wrote : (test(uTr)+test(vTphi)+test(wTz)) and got the error: "undefined variable vTphi.

I know that the formulation is (test(uTr)+test(vTy)+test(wTz)) in cartesian co-ordinates. I am trying to write the analogue of the expression in cylindrical co-ordinates.

Could someone help me with this?


0 Replies Last Post Jan 11, 2018, 3:35 p.m. EST
COMSOL Moderator

Hello Vaidehi Oruganti

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.