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.
Particle tracing (accumulation) with moving mesh
Posted May 3, 2015, 9:21 p.m. EDT Charged Particle Tracing, Particle Tracing for Fluid Flow, Mesh Version 5.0 0 Replies
Please login with a confirmed email address before reporting spam
I'm using the Particle tracing and moving mesh modules to simulate particle accumulation due to settlement at flow channel boundaries. I add an "automatic remeshing" solver when solve the problem, it runs well at first, but once it remeshes, the error of "Undefined value found.
- Detail: Undefined value found in the stiffness matrix.
There are 1 equations giving NaN/Inf in the matrix rows for the variable comp1.fpt.Fvx.
There are 1 equations giving NaN/Inf in the matrix rows for the variable comp1.fpt.Fvy.
There are 328 equations giving NaN/Inf in the matrix rows for the variable comp1.qx.
There are 328 equations giving NaN/Inf in the matrix rows for the variable comp1.qy.
and similarly for the degrees of freedom, NaN/Inf in the matrix columns." occurs.
Does anyone know why this happens? Thank you very much for your help.
Regards,
Tianhang
Hello Tianhang Bai
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.