[petsc-users] adaptive TS for IMEX

[Mark Adams]

See the manual, for details, there are a lot of options here. I use this
and adaptive seems to get turned on my default:

-ts_type arkimex -ts_arkimex_type 1bee

and

-ts_adapt_monitor -info :tsadapt


On Sun, Apr 5, 2020 at 6:28 AM Yuyun Yang <yyang85 at stanford.edu> wrote:

> Hello team,
>
> I wonder whether TS currently can do error control for both explicit and
> implicit Runge-Kutta methods? I have a multi-physics problem that have some
> fields integrated explicitly and others implicitly, and sometimes they
> operate on very different time scales. The ODE solver I currently have (not
> PETSc) has error control only on the explicit variables and use the
> computed dt for the implicit variables, which results in some pretty sudden
> jumps in solutions. I wonder if there is an example in TS that could solve
> this problem?
>
> Thank you!
> Yuyun
>
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