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Relative Tolerance

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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.

1 Reply Last Post 12.11.2012, 14:22 GMT-5
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)

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Posted: 1 decade ago 12.11.2012, 14:22 GMT-5
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

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Good luck
Ivar
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

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