[FLASH-USERS] periodic/outflow BCs in PFFT+MG
Mateusz Ruszkowski
mateuszr at umich.edu
Thu Aug 25 11:26:30 EDT 2011
Hi All,
Does anybody know if it is possible to force the code to use "periodic"
boundary conditions for self-gravity (using PFFT + multigrid), i.e.,
grav_boundary_type = "periodic"
and to make the code recognize "outflow" boundary conditions for
hydrodynamics, i.e.,
xl_boundary_type = outflow , etc ?
This could be a reasonable approximation if the self-gravitating source
weakly contributes to the gravitational acceleration close to the domain
boundary. An obvious advantage would be the speed-up of the computation
of the gravitational forces achievable via the parallel version of FFT.
I found an old posting on this on the FLASH e-mail list:
http://flash.uchicago.edu/pipermail/flash-users/2008-May/000186.html
and I was wondering if there have been new developments regarding this
issue.
Thanks,
Mateusz
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