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.
void equations for Lagrange multiplier
Posted May 29, 2020, 4:37 a.m. EDT Semiconductor Devices, Parameters, Variables, & Functions, Equation-Based Modeling Version 5.3a 0 Replies
Please login with a confirmed email address before reporting spam
Hello everyone, I am simulating with semiconductor interface and I am trying to specify a boundary condition using weak contribution. In fat, I am trying to connect an electric potential that I have calculated with electrostatic interface previusly and I want to use the electric potential in semiconductor interface (manully I am coupling physics). I tried using weak contribution and weak constraint for the boundary, but every time I want to compute, it says there are a number of void equations for lagrange multiplier, or there is an empty raw for matrix. Even when I want to set the electric potential to a simple number, this message shows up. I tried to set the initial value for the lagrange multiplier to a small number but it didn't work. Can someone help me? Thank you
Hello Shahrzad Molavi
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.