On 4/20/24 06:05, Praveen C wrote:
I am using embedded RK scheme
https://www.dealii.org/current/doxygen/deal.II/classTimeStepping_1_1EmbeddedExplicitRungeKutta.html
which chooses the time step in some adaptive manner.
I also want to save solution to file at some intervals, e.g., at t =
1.0, 2.0, etc for which sometimes I have to use a definite delta_t so I
exactly reach the next time I need to save the solution.
I could not figure out how to force evolve_one_time_step to sometimes
use the given delta_t.
Do you have any suggestion for this ?
I'm not sure these classes were designed for this kind of thing. My suggestion
would be to use the very much more sophisticated interfaces to SUNDIALS and
PETSc's TS sub-system. See also
https://github.com/dealii/dealii/pull/15540
Best
W.
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