Good day every, I wish everybody a good and productive week.
I was wondering if anybody could give me some insight on how to solve the next error that my COMSOL model is showing:
The error is the next:
Feature: Time-Dependent Solver 1 (sol5/t1)
Failed to find consistent initial values.
Last time step is not converged.
I will really appreciate anybodies help or suggestions.
I wish you all a great evening
I believe the problem is that there is no unique value for the pressure. If you set a Pressure Point Constraint to zero at any point it works.
Hello Isaias Peraza ,
You don't mention any details about the model you re attempting to solve, nor the solver. If you can provide some more details it may be easier to provide you with a more refined answer.
How complex is your model (i.e., what modules are you using/physics are you solving)? Maybe first simplify the model and verify the results before adding more complexity.
General factors to consider are:
- is the mesh suitable (is it too coarse/fine)
- are all boundary conditions defined
- are suitable initial conditions defined (you may want to make some quick calculations as an estimate)
- are the units of defined variables/parameters correct
You may also find the following information helpful:
http://evgeni.org/oldfish/Top_nine_hints_for_working_with_Comsol#Hint_2._Get_it_to_converge_and_get_an_accurate_solution
https://www.comsol.com/blogs/improving-convergence-multiphysics-problems/
Hope it's a useful start, look forward to more information,
Jules
This is discussed in this blog: https://www.comsol.com/support/knowledgebase/1172/
I recommend contacting the techinal support team @COMSOL Multiphysics to help answer any COMSOL related questions http://www.comsol.com/support. Their team of experts will guide you through the modeling process.
when the initial values of some independent variables is so large from the desired solution, the model attempt to give this error@
maybe your mesh is poor or coarse, or your have not define your BCs correctly.
- Badges
- Science topic