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From: Ana Mijic on 23 Apr 2010 06:31
I'm using ode15s solver and it works perfectly well and quickly till the very end of the simulation, when it becomes extremely slow. The problem is getting worse when I increse the spatial grid resolution. Any ideas why? Huge thanks!
From: Torsten Hennig on 23 Apr 2010 02:42
> I'm using ode15s solver and it works perfectly well
> and quickly till the very end of the simulation, when
> it becomes extremely slow. The problem is getting
> worse when I increse the spatial grid resolution. Any
> ideas why? Huge thanks!

Maybe analyzing the results the solver produces during
the slow time period can give you a hint.
(Steep gradients in the solution, unphysical
values for some of the solution variables ...)

Best wishes
Torsten.
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