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* Add new parameters derivatives_zero_y and derivatives_zero_z in order todiener2006-02-14
| | | | | | | | | | | | | | ecplictly setting any derivatives in the y- and/or z-direction to zero when simulating 1- or 2-D problems with a 3D code. This avoids issues with errors at roundoff level in the y- and z-directions. Should be used with care and together with the parameter check_grid_sizes to avoid complaints about too small grids in the y- and z-directions. Has only been tested in a few cases. If problems are caused by this commit, please report them immediately. git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@59 f69c4107-0314-4c4f-9ad4-17e986b73f4a
* Kreiss-Oliger type dissipation operators compatible with the diagonal 4-2 anddiener2006-02-02
6-3 derivative operators. git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@55 f69c4107-0314-4c4f-9ad4-17e986b73f4a