[FLASH-USERS] Change boundary condition for restarted simulation

[Magyar Norbert]

Dear Klaus, Ryan,

Thank you for your answers, suggestions. Ryan, in light of what Klaus
wrote, I believe that there is not much hope to switch to periodic
boundaries once the block connections are not set up that way initially.
What if I initialize a dummy simulation, with the same amount of
blocks/refinement, but initially periodic. Then, I just replace the
variables in this periodic checkpoint file with my variables from the
checkpoint file at time t. Would that work? Is the topology consistent
between identical "looking" checkpoint files (same number,size,refinement
of blocks) coming from two separate setups?

Thank you very much,

Norbert

Ryan Farber <rjfarber at umich.edu> ezt írta (időpont: 2019. máj. 6., H,
18:18):

> 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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