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 The information provided may be out of date.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.

Case distinctive periodic boundary condition

Posted May 4, 2012, 11:49 a.m. EDT Low-Frequency Electromagnetics, Geometry, Materials, Modeling Tools & Definitions, Parameters, Variables, & Functions, Results & Visualization, Studies & Solvers Version 4.2a 0 Replies

Jan
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Hello,

I need a case distinctive periodic boundary condition (magnetic vector potential), depending on atan2(y,x).

I thought about using a simple piecewise function for the magnetic vector potential on the wanted boundary. But I have no idea, how to tell COMSOL that I want the magnetic vector potential from another specific boundary as source (except using the COMSOL- given periodic boundary conditions).

magnetic vector potential on destination boundary should be the piecewise function:

argument __________________ expression
0 - pi/2 ____________________ Az (on source boundary)
pi/2 - pi ___________________ -Az (on source boundary)
etc.


The physical problem behind this is a simulation of a fourth electrical rotating machine.
When the rotor rotates out of the stator, the continuity condition changes to anti.
So the destination boundary is rotating all the time with the rotor and the source boundary stays still.

It would be useful if there was a way to use Parameterized curves from the Post Processor as input funtions.

Any help?

Thanks in advance
0 Replies Last Post May 4, 2012, 11:49 a.m. EDT
COMSOL Moderator

Hello Jan

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