Vassili
By default, the symmetry boundary points are output. This often leads to strange-looking data, as the symmetry points are just copies of interior points. There are parameters to suppress this, e.g.
CarpetIOHDF5::output_symmetry_points (try setting this to "no")
You could also manually remove the symmetry points by clipping your image at the symmetry plane z=0.
-erik
On Wed, Jan 16, 2013 at 7:08 AM, Vassilios Mewes vassilios.mewes@uv.eswrote:
sorry for the messages before, hopefully the mail is now small enough, but i thought that adding a plot might explain better what i mean..
Hello all,
i recently read the Reisswig et al. 2012 paper and started trying to switch to cell-centered grid in order to be able to use the LSUThorns/Refluxing thorn. i am trying to simulate BH+torus systems and due to the size of the torus its hard to have it contained within a refinement level, so i thought that using a cell-centered grid in order to use refluxing might improve results..
i however run into problems getting the hdf5 output of 3D grid frundtions to work...
using the static_tov_cc_rf.par file from the Refluxing trunk, i get weird output in the mesh at the reflection boundaries (the par file uses octant mode)..
i am using the following parameters for CarpetIOHDF5:
IOHDF5::out_every = 256 IOHDF5::one_file_per_group = no IOHDF5::output_symmetry_points = no IOHDF5::out3D_ghosts = no IOHDF5::output_ghost_points = no IOHDF5::out3D_outer_ghosts = no IOHDF5::output_boundary_points = no IOHDF5::output_buffer_points = no IOHDF5::compression_level = 9 IOHDF5::use_checksums = yes IOHDF5::out_vars = " HydroBase::rho HydroBase::press HydroBase::eps HydroBase::vel ADMBase::lapse ADMBase::metric ADMBase::curv GRHydro::scon "
the simulations seems to work fine, so is the carpetiohdf5 thorn not suitable for cell-centered output? another effect (that might be output related) is that the different refinement levels are shifted (i'll attach a file showing this in the TOV from the par file (i added extra refinement levels to illustrate the effect) as well as a plot of the density in the torus)...
are the specific parameters for cell-centered hdf5 output or other thorns that could take care of that?
best wishes,
Vassili
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