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Diffstat (limited to 'src/metrics/Kasner_axisymmetric.F')
| -rw-r--r-- | src/metrics/Kasner_axisymmetric.F | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/metrics/Kasner_axisymmetric.F b/src/metrics/Kasner_axisymmetric.F new file mode 100644 index 0000000..aa798a8 --- /dev/null +++ b/src/metrics/Kasner_axisymmetric.F @@ -0,0 +1,65 @@ +C Axisymmetric Kasner solution ! +C +C Author : D. Vulcanov +C see ../../README for copyright & licensing info +C +C $Header$ + +#include "cctk.h" +#include "cctk_Parameters.h" + + subroutine Exact__Kasner_axisymmetric( + $ x, y, z, t, + $ gdtt, gdtx, gdty, gdtz, + $ gdxx, gdyy, gdzz, gdxy, gdyz, gdzx, + $ gutt, gutx, guty, gutz, + $ guxx, guyy, guzz, guxy, guyz, guzx, + $ psi, Tmunu_flag) + + implicit none + + DECLARE_CCTK_PARAMETERS + +c input arguments + CCTK_REAL t + CCTK_DECLARE(CCTK_REAL, x,) + CCTK_DECLARE(CCTK_REAL, y,) + CCTK_DECLARE(CCTK_REAL, z,) + +c output arguments + CCTK_REAL gdtt, gdtx, gdty, gdtz, + $ gdxx, gdyy, gdzz, gdxy, gdyz, gdzx, + $ gutt, gutx, guty, gutz, + $ guxx, guyy, guzz, guxy, guyz, guzx + CCTK_DECLARE(CCTK_REAL, psi,) + LOGICAL Tmunu_flag + +C This is a vacuum spacetime with no cosmological constant + Tmunu_flag = .false. + + gdtt = -t**(-0.5d0) + gdtx = 0.d0 + gdty = 0.d0 + gdtz = 0.d0 + gdxx = t**(-0.5d0) + gdyy = t + gdzz = t + gdxy = 0.d0 + gdyz = 0.d0 + gdzx = 0.d0 + + gutt = -t**(0.5d0) + gutx = 0.d0 + guty = 0.d0 + gutz = 0.d0 + guxx = t**(0.5d0) + guyy = 1.d0/t + guzz = 1.d0/t + guxy = 0.d0 + guyz = 0.d0 + guzx = 0.d0 + + + + return + end |