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4 Replies
Last post: January 9, 2013 10:14am UTC
January 5, 2013 10:40am UTC
Damping factor
can anybody explain what exactly the " Damping factor" in context of COMSOL?
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January 5, 2013 2:23pm UTC in response to PT
Re: Damping factor
Hi
perhaps, if you explain in which "physics" and a bit more to what you refer to ;)
Have you tried the help and to search over the doc ?
--
Good luck
Ivar
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January 6, 2013 10:30am UTC in response to Ivar Kjelberg
Re: Damping factor
Hi
Ivar
Thanks for reply.
I have tried, Generally it is happen under following circumstances (as I understood).
Poor mesh quality, not proper boundary conditions, source term value. I have gone all these but not success.
I am using Navier-stokes and follow by Nernst-Planck. Navier-stokes portion solved properly but for second solution something is wrong which gives" non convergence, even when using minimum damping factor"........kind of error. The velocity of Navier-stokes is use in Nernst-Planck. That is why I want to understand about damping factor with respect to COMSOL. So i can fine source of error.
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January 6, 2013 10:38am UTC in response to PT
Re: Damping factor
Hi
the best I know is what is descrivbed under: COMSOLMultiphysicsUsersGuide.pdf search for "damping factor"
the further down you have more on the "DAMPED NEWTON METHODS"
--
Good luck
Ivar
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January 9, 2013 10:14am UTC in response to Ivar Kjelberg
Re: Damping factor
Thanks
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