Menu

Discussion Forum

New Discussion
Filtra

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 The information provided may be out of date.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.

How to solve first-order PDE?

Posted 12 feb 2014, 14:12 GMT-5 Studies & Solvers Version 4.3a 0 Replies

Maia Shapiro
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello,

I try to solve 2D first order PDE in COMSOL, but unsuccessful yet. The equation is f_t + x*f_x + y*f_y = 0 with initial condition f(x,y,t=0) = y/x - log(x) on square area S = (1..9, 0..1). The analytic solution looks like f(x,y,t) = y/x + log(x) + t, but COMSOL gives wrong solution. I use Convection-Diffusion module.

Any thoughts,
Thanks.
0 Replies Last Post 12 feb 2014, 14:12 GMT-5
COMSOL Moderator

Hello Maia Shapiro

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