Menu

Discussion Forum

New Discussion
Filter

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.

Problems with time-dependent on 3D coils

Posted Nov 20, 2018, 12:28 p.m. EST Low-Frequency Electromagnetics Version 5.3 0 Replies

Angela Sofia Pereira
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

Good afternoon,

I'm trying to study the time-dependent on 3D coils, through the example "Magnetic Field of Helmholtz Coil", in order to observe the inductance in one of the coils through the other. However, the error always appears:

Feature: Time-Dependent Solver 1 (sol6 / t1) Failed to find consistent initial values. Singular matrix.

For mesh-case 0 there are 23726 void equations (empty rows in matrix) for the variable comp1.mf.psi. at coordinates: (), ... and similarly for the degrees of freedom (empty columns in matrix). Last time step is not converged.

From my research, I have observed that it is a common difficulty (the study of the time dependent on 3D coils).

Someone can help me? Please?

Thanks

0 Replies Last Post Nov 20, 2018, 12:28 p.m. EST
COMSOL Moderator

Hello Angela Sofia Pereira

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