Hi, On Thursday, January 25, 2018 at 4:00:45 AM UTC-5, Maxi Miller wrote: > > I am trying to calculate a heat equation using a similar approach as in > step-33 (auto-diff). Now my heat source is very narrow and very intense, > resulting in a high gradient (1e6 within one or two cells), thus crashing > the program with a solver error of "loss of precision". What can I do to > mitigate that? I can not change the shape and the parameters of the heat > source, but would increase the amount of points in my grid mitigate that > problem? > You want to use a better preconditioner. This will help with your bad condition number.
Best, Bruno -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
