My Electro QuasiStatic simulation failed to converge - Dynamic Range...
-
Sometimes the EQS solver refuses to converge and a warning like this appears in the log:
Dynamic range is 1.1096e+12 (lower limit solid Background (1) and upper limit solid Cover Loops 3 (1.1096e+12)).
WARNING: The material parameters differ considerably, please consider to decrease the dynamic range of the material parameters or increase the solver's relative tolerance.Technical explanation:
The problem that you are trying to solve is very difficult for the EQS solver: some regions are dominated by ohmic current effect (the materials with high conductivity), some regions are dominated by displacement currents (the free space or materials with very low conductivity) and the solver is trying to accommodate both at the same time.
Solution(s):
Option 1: Change the material properties of all the metals to PEC. This will reduce the "dynamic range" a lot and the solver should converge.
Option 2: Use either the Quasi-static or the Ohmic-QuasiStatic solver, intead of QuasiStatic. Whether or not this is a good idea depends on the application.
Option 3: Reducing the solver tolerance (e.g. from 1e-8 to 1e-12) may eliminate the error, but at a high computational cost.
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login