Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
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.
Relative Tolerance
Posted 12 nov 2012, 07:14 GMT-5 Version 4.2a, Version 4.3 1 Reply
Please login with a confirmed email address before reporting spam
Hi
I have done some simulations and the intial values used are the default ones. I was wondering when does initial values are important? Is it important to set the relative tolerance for a problem involing linear thermoelasticity and heat transfer? Although my simulation converges at much more lower values than the relative tolerance.
I have done some simulations and the intial values used are the default ones. I was wondering when does initial values are important? Is it important to set the relative tolerance for a problem involing linear thermoelasticity and heat transfer? Although my simulation converges at much more lower values than the relative tolerance.
1 Reply Last Post 12 nov 2012, 14:22 GMT-5
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Hi
most of the time I'm rather happy with the solver settings, but also, most of the time I use initial values, that I try to set closer to my best guess of the solution, or that I correct after a first run, because the solver converges quicker like that and my results are overall smoother. All default = 0 is a startingpoint, but not always the best for convergence
--
Good luck
Ivar
most of the time I'm rather happy with the solver settings, but also, most of the time I use initial values, that I try to set closer to my best guess of the solution, or that I correct after a first run, because the solver converges quicker like that and my results are overall smoother. All default = 0 is a startingpoint, but not always the best for convergence
--
Good luck
Ivar