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author | schnetter <schnetter@c3c03602-0f4f-0410-b3fa-d2c81c8a7dc5> | 2004-04-08 16:08:43 +0000 |
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committer | schnetter <schnetter@c3c03602-0f4f-0410-b3fa-d2c81c8a7dc5> | 2004-04-08 16:08:43 +0000 |
commit | 3185a4c67b74fab036f554d44ed0e5a2f0d69e60 (patch) | |
tree | b185a305cfbe97fa07d2df349f8ece957c1fddc7 /README | |
parent | a8d7329265efc3790dc8d5876d74ce24b4928b89 (diff) |
A symmetry thorn with a 90 degree rotating symmetry. This is not yet
tested.
git-svn-id: http://svn.cactuscode.org/arrangements/CactusNumerical/RotatingSymmetry90/trunk@2 c3c03602-0f4f-0410-b3fa-d2c81c8a7dc5
Diffstat (limited to 'README')
-rw-r--r-- | README | 23 |
1 files changed, 23 insertions, 0 deletions
@@ -0,0 +1,23 @@ +CVS info : $Header$ + +Cactus Code Thorn RotatingSymmetry90 +Thorn Author(s) : Erik Schnetter <schnetter@aei.mpg.de> +Thorn Maintainer(s) : Erik Schnetter <schnetter@aei.mpg.de> +-------------------------------------------------------------------------- + +Purpose of the thorn: + +Provide a 90 degree rotational symmetry boundary condition. This is +the kind of symmetry that exists e.g. in a singl black hole evolution +when the black hole has spin. The same setup also admits an +additional bitant symmetry. + +Currently the symmetry is fixed to be located at the lower x and y +boundaries, so that there is a rotation about the z axis. + +The coordinate thorn does not know about this symmetry. You will have +to set up the domain such that you have an upper quadrant in the x and +y directions. + +This symmetry boundary condition can be mixed with arbitrary symmetry +conditions in the z direction, e.g. bitant or periodicity. |