diff options
author | diener <diener@f69c4107-0314-4c4f-9ad4-17e986b73f4a> | 2006-02-02 15:12:27 +0000 |
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committer | diener <diener@f69c4107-0314-4c4f-9ad4-17e986b73f4a> | 2006-02-02 15:12:27 +0000 |
commit | c92386fd0eab5c2697ef3ab8c7c5531e0c1d42b3 (patch) | |
tree | a9d9df7c6a7f50ba268c28b79119004c64bc852b /src/Dissipation_4_2_alt.F90 | |
parent | 965d6456bd9091f2b8414a15506fe98b66491269 (diff) |
Kreiss-Oliger type dissipation operators compatible with the diagonal 4-2 and
6-3 derivative operators.
git-svn-id: https://svn.cct.lsu.edu/repos/numrel/LSUThorns/SummationByParts/trunk@55 f69c4107-0314-4c4f-9ad4-17e986b73f4a
Diffstat (limited to 'src/Dissipation_4_2_alt.F90')
-rw-r--r-- | src/Dissipation_4_2_alt.F90 | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/Dissipation_4_2_alt.F90 b/src/Dissipation_4_2_alt.F90 new file mode 100644 index 0000000..c0a68ba --- /dev/null +++ b/src/Dissipation_4_2_alt.F90 @@ -0,0 +1,240 @@ +! $Header$ + +#include "cctk.h" +#include "cctk_Parameters.h" + +subroutine dissipation_4_2_alt (var, ni, nj, nk, bb, gsize, delta, epsilon, rhs) + + implicit none + + DECLARE_CCTK_PARAMETERS + + integer :: ni, nj, nk + CCTK_REAL, dimension(ni,nj,nk), intent(in) :: var + CCTK_REAL, dimension(ni,nj,nk), intent(inout) :: rhs + CCTK_INT, dimension(6), intent(in) :: bb + CCTK_INT, dimension(3), intent(in) :: gsize + CCTK_REAL, dimension(3), intent(in) :: delta + CCTK_REAL, intent(in) :: epsilon + + CCTK_REAL :: zero = 0.0 + integer, parameter :: wp = kind(zero) + integer :: i, j, k + CCTK_REAL, dimension(7,4) :: a + CCTK_REAL :: idel + + CCTK_INT :: il, ir, jl, jr, kl, kr + + call set_coeff ( a ) + + idel = epsilon / ( 64 * delta(1) ) + + if ( bb(1) == 0 ) then + il = 1 + gsize(1) + else + rhs(1,:,:) = rhs(1,:,:) + & + ( a(1,1) * var(1,:,:) + a(2,1) * var(2,:,:) + & + a(3,1) * var(3,:,:) + a(4,1) * var(4,:,:) ) * idel + rhs(2,:,:) = rhs(2,:,:) + & + ( a(1,2) * var(1,:,:) + a(2,2) * var(2,:,:) + & + a(3,2) * var(3,:,:) + a(4,2) * var(4,:,:) + & + a(5,2) * var(5,:,:) ) * idel + rhs(3,:,:) = rhs(3,:,:) + & + ( a(1,3) * var(1,:,:) + a(2,3) * var(2,:,:) + & + a(3,3) * var(3,:,:) + a(4,3) * var(4,:,:) + & + a(5,3) * var(5,:,:) + a(6,3) * var(6,:,:) ) * idel + rhs(4,:,:) = rhs(4,:,:) + & + ( a(1,4) * var(1,:,:) + a(2,4) * var(2,:,:) + & + a(3,4) * var(3,:,:) + a(4,4) * var(4,:,:) + & + a(5,4) * var(5,:,:) + a(6,4) * var(6,:,:) + & + a(7,4) * var(7,:,:) ) * idel + + il = 5 + end if + if ( bb(2) == 0 ) then + ir = ni - gsize(1) + else + rhs(ni-3,:,:) = rhs(ni-3,:,:) + & + ( a(1,4) * var(ni,:,:) + a(2,4) * var(ni-1,:,:) + & + a(3,4) * var(ni-2,:,:) + a(4,4) * var(ni-3,:,:) + & + a(5,4) * var(ni-4,:,:) + a(6,4) * var(ni-5,:,:) + & + a(7,4) * var(ni-6,:,:) ) * idel + rhs(ni-2,:,:) = rhs(ni-2,:,:) + & + ( a(1,3) * var(ni,:,:) + a(2,3) * var(ni-1,:,:) + & + a(3,3) * var(ni-2,:,:) + a(4,3) * var(ni-3,:,:) + & + a(5,3) * var(ni-4,:,:) + a(6,3) * var(ni-5,:,:) ) * idel + rhs(ni-1,:,:) = rhs(ni-1,:,:) + & + ( a(1,2) * var(ni,:,:) + a(2,2) * var(ni-1,:,:) + & + a(3,2) * var(ni-2,:,:) + a(4,2) * var(ni-3,:,:) + & + a(5,2) * var(ni-4,:,:) ) * idel + rhs(ni,:,:) = rhs(ni,:,:) + & + ( a(1,1) * var(ni,:,:) + a(2,1) * var(ni-1,:,:) + & + a(3,1) * var(ni-2,:,:) + a(4,1) * var(ni-3,:,:) ) * idel + + ir = ni - 4 + end if + rhs(il:ir,:,:) = rhs(il:ir,:,:) + & + ( -20.0_wp * var(il:ir,:,:) + & + 15.0_wp * ( var(il-1:ir-1,:,:) + & + var(il+1:ir+1,:,:) ) - & + 6.0_wp * ( var(il-2:ir-2,:,:) + & + var(il+2:ir+2,:,:) ) + & + ( var(il-3:ir-3,:,:) + & + var(il+3:ir+3,:,:) ) ) * idel + + call set_coeff ( a ) + + idel = epsilon / ( 64 * delta(2) ) + + if ( bb(3) == 0 ) then + jl = 1 + gsize(2) + else + rhs(:,1,:) = rhs(:,1,:) + & + ( a(1,1) * var(:,1,:) + a(2,1) * var(:,2,:) + & + a(3,1) * var(:,3,:) + a(4,1) * var(:,4,:) ) * idel + rhs(:,2,:) = rhs(:,2,:) + & + ( a(1,2) * var(:,1,:) + a(2,2) * var(:,2,:) + & + a(3,2) * var(:,3,:) + a(4,2) * var(:,4,:) + & + a(5,2) * var(:,5,:) ) * idel + rhs(:,3,:) = rhs(:,3,:) + & + ( a(1,3) * var(:,1,:) + a(2,3) * var(:,2,:) + & + a(3,3) * var(:,3,:) + a(4,3) * var(:,4,:) + & + a(5,3) * var(:,5,:) + a(6,3) * var(:,6,:) ) * idel + rhs(:,4,:) = rhs(:,4,:) + & + ( a(1,4) * var(:,1,:) + a(2,4) * var(:,2,:) + & + a(3,4) * var(:,3,:) + a(4,4) * var(:,4,:) + & + a(5,4) * var(:,5,:) + a(6,4) * var(:,6,:) + & + a(7,4) * var(:,7,:) ) * idel + + jl = 5 + end if + if ( bb(4) == 0 ) then + jr = nj - gsize(2) + else + rhs(:,nj-3,:) = rhs(:,nj-3,:) + & + ( a(1,4) * var(:,nj,:) + a(2,4) * var(:,nj-1,:) + & + a(3,4) * var(:,nj-2,:) + a(4,4) * var(:,nj-3,:) + & + a(5,4) * var(:,nj-4,:) + a(6,4) * var(:,nj-5,:) + & + a(7,4) * var(:,nj-6,:) ) * idel + rhs(:,nj-2,:) = rhs(:,nj-2,:) + & + ( a(1,3) * var(:,nj,:) + a(2,3) * var(:,nj-1,:) + & + a(3,3) * var(:,nj-2,:) + a(4,3) * var(:,nj-3,:) + & + a(5,3) * var(:,nj-4,:) + a(6,3) * var(:,nj-5,:) ) * idel + rhs(:,nj-1,:) = rhs(:,nj-1,:) + & + ( a(1,2) * var(:,nj,:) + a(2,2) * var(:,nj-1,:) + & + a(3,2) * var(:,nj-2,:) + a(4,2) * var(:,nj-3,:) + & + a(5,2) * var(:,nj-4,:) ) * idel + rhs(:,nj,:) = rhs(:,nj,:) + & + ( a(1,1) * var(:,nj,:) + a(2,1) * var(:,nj-1,:) + & + a(3,1) * var(:,nj-2,:) + a(4,1) * var(:,nj-3,:) ) * idel + + jr = nj - 4 + end if + rhs(:,jl:jr,:) = rhs(:,jl:jr,:) + & + ( -20.0_wp * var(:,jl:jr,:) + & + 15.0_wp * ( var(:,jl-1:jr-1,:) + & + var(:,jl+1:jr+1,:) ) - & + 6.0_wp * ( var(:,jl-2:jr-2,:) + & + var(:,jl+2:jr+2,:) ) + & + ( var(:,jl-3:jr-3,:) + & + var(:,jl+3:jr+3,:) ) ) * idel + + call set_coeff ( a ) + + idel = epsilon / ( 64 * delta(3) ) + + if ( bb(5) == 0 ) then + kl = 1 + gsize(3) + else + rhs(:,:,1) = rhs(:,:,1) + & + ( a(1,1) * var(:,:,1) + a(2,1) * var(:,:,2) + & + a(3,1) * var(:,:,3) + a(4,1) * var(:,:,4) ) * idel + rhs(:,:,2) = rhs(:,:,2) + & + ( a(1,2) * var(:,:,1) + a(2,2) * var(:,:,2) + & + a(3,2) * var(:,:,3) + a(4,2) * var(:,:,4) + & + a(5,2) * var(:,:,5) ) * idel + rhs(:,:,3) = rhs(:,:,3) + & + ( a(1,3) * var(:,:,1) + a(2,3) * var(:,:,2) + & + a(3,3) * var(:,:,3) + a(4,3) * var(:,:,4) + & + a(5,3) * var(:,:,5) + a(6,3) * var(:,:,6) ) * idel + rhs(:,:,4) = rhs(:,:,4) + & + ( a(1,4) * var(:,:,1) + a(2,4) * var(:,:,2) + & + a(3,4) * var(:,:,3) + a(4,4) * var(:,:,4) + & + a(5,4) * var(:,:,5) + a(6,4) * var(:,:,6) + & + a(7,4) * var(:,:,7) ) * idel + + kl = 5 + end if + if ( bb(6) == 0 ) then + kr = nk - gsize(3) + else + rhs(:,:,nk-3) = rhs(:,:,nk-3) + & + ( a(1,4) * var(:,:,nk) + a(2,4) * var(:,:,nk-1) + & + a(3,4) * var(:,:,nk-2) + a(4,4) * var(:,:,nk-3) + & + a(5,4) * var(:,:,nk-4) + a(6,4) * var(:,:,nk-5) + & + a(7,4) * var(:,:,nk-6) ) * idel + rhs(:,:,nk-2) = rhs(:,:,nk-2) + & + ( a(1,3) * var(:,:,nk) + a(2,3) * var(:,:,nk-1) + & + a(3,3) * var(:,:,nk-2) + a(4,3) * var(:,:,nk-3) + & + a(5,3) * var(:,:,nk-4) + a(6,3) * var(:,:,nk-5) ) * idel + rhs(:,:,nk-1) = rhs(:,:,nk-1) + & + ( a(1,2) * var(:,:,nk) + a(2,2) * var(:,:,nk-1) + & + a(3,2) * var(:,:,nk-2) + a(4,2) * var(:,:,nk-3) + & + a(5,2) * var(:,:,nk-4) ) * idel + rhs(:,:,nk) = rhs(:,:,nk) + & + ( a(1,1) * var(:,:,nk) + a(2,1) * var(:,:,nk-1) + & + a(3,1) * var(:,:,nk-2) + a(4,1) * var(:,:,nk-3) ) * idel + + kr = nk - 4 + end if + rhs(:,:,kl:kr) = rhs(:,:,kl:kr) + & + ( -20.0_wp * var(:,:,kl:kr) + & + 15.0_wp * ( var(:,:,kl-1:kr-1) + & + var(:,:,kl+1:kr+1) ) - & + 6.0_wp * ( var(:,:,kl-2:kr-2) + & + var(:,:,kl+2:kr+2) ) + & + ( var(:,:,kl-3:kr-3) + & + var(:,:,kl+3:kr+3) ) ) * idel + +contains + + subroutine set_coeff ( a ) + + implicit none + + CCTK_REAL, dimension(7,4), intent(OUT) :: a + CCTK_REAL :: zero = 0.0 + integer, parameter :: wp = kind(zero) + + a(1,1) = -2.8235294117647058823529411764705882352941176470588_wp + a(2,1) = 8.4705882352941176470588235294117647058823529411765_wp + a(3,1) = -8.4705882352941176470588235294117647058823529411765_wp + a(4,1) = 2.8235294117647058823529411764705882352941176470588_wp + a(5,1) = 0.0_wp + a(6,1) = 0.0_wp + a(7,1) = 0.0_wp + a(1,2) = 2.4406779661016949152542372881355932203389830508475_wp + a(2,2) = -8.1355932203389830508474576271186440677966101694915_wp + a(3,2) = 9.7627118644067796610169491525423728813559322033898_wp + a(4,2) = -4.8813559322033898305084745762711864406779661016949_wp + a(5,2) = 0.81355932203389830508474576271186440677966101694915_wp + a(6,2) = 0.0_wp + a(7,2) = 0.0_wp + a(1,3) = -3.3488372093023255813953488372093023255813953488372_wp + a(2,3) = 13.395348837209302325581395348837209302325581395349_wp + a(3,3) = -21.209302325581395348837209302325581395348837209302_wp + a(4,3) = 16.744186046511627906976744186046511627906976744186_wp + a(5,3) = -6.6976744186046511627906976744186046511627906976744_wp + a(6,3) = 1.1162790697674418604651162790697674418604651162791_wp + a(7,3) = 0.0_wp + a(1,4) = 0.97959183673469387755102040816326530612244897959184_wp + a(2,4) = -5.8775510204081632653061224489795918367346938775510_wp + a(3,4) = 14.693877551020408163265306122448979591836734693878_wp + a(4,4) = -19.591836734693877551020408163265306122448979591837_wp + a(5,4) = 14.693877551020408163265306122448979591836734693878_wp + a(6,4) = -5.8775510204081632653061224489795918367346938775510_wp + a(7,4) = 0.97959183673469387755102040816326530612244897959184_wp + + end subroutine set_coeff + +end subroutine dissipation_4_2_alt |