[FLASH-USERS] Change boundary condition for restarted simulation

[Ryan Farber]

Hi Norbert,

Which version of FLASH are you using? I'm using 4.2.2, which is rather old
but I have Grid_init.F90 call RuntimeParameters_get() for the boundary
types and it looks to me that Grid_init.F90 should do that whether or not
restarting. Also, Driver_initFlash.F90 calls Grid_init independent of
restarting. So, I haven't tested it on my end but I would expect what
you're trying to do to work for me.

If you're using a more recent FLASH version and things have changed then
you can "grep -in zl_boundary_type *.F90" in your object directory to see
where the code reads the value from flash.par and either modify that
subroutine to do it even if restarting or place a call to
RuntimeParameters_get() for the boundary types near the bottom of
Driver_initFlash.F90.

Best,
--------
Ryan


On Sat, May 4, 2019 at 2:36 PM Magyar Norbert <magyar.f.norbert at gmail.com>
wrote:

> Dear FLASH developers,
>
> I want to run a simulation until some time t. Then, using the checkpoint
> file at time t, I would like to restart the simulation, but instead of user
> or outflow boundary conditions as until time t, now with periodic
> boundaries. Is there a way to do this? The flash.par file info is not
> accounted for when doing a restart from a checkpoint file. I tried to
> manually change the string in the 'runtimeparameters' in the hdf5 file, but
> apparently it does not work. Any suggestions?
>
> All the best,
>
> Norbert
>
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