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operator splitting and time integration schemes

Posted: 16 Jan 2024, 06:05
by spacedout
Good evening

If I decompose a PDE into a sequence of

dF/dt = some homogeneous term
dF/dt = some reaction term

should I use an an implicit or explicit time discretization scheme for each of these simplified PDEs ?

Best to all

Re: operator splitting and time integration schemes

Posted: 17 Jan 2024, 23:48
by spacedout
I got astronomical overflows after only 3e-8 sec for explicit euler and after only 6.5e-8 sec for implicit euler

I guess Elmer doesn't like my 3 ion continuity equations