diff options
Diffstat (limited to 'src/WaveToy.F')
| -rw-r--r-- | src/WaveToy.F | 30 |
1 files changed, 13 insertions, 17 deletions
diff --git a/src/WaveToy.F b/src/WaveToy.F index 27dea4a..24228c4 100644 --- a/src/WaveToy.F +++ b/src/WaveToy.F @@ -42,6 +42,8 @@ CCTK_REAL :: dx2,dy2,dz2,dt2 CCTK_REAL :: dx2i,dy2i,dz2i + CCTK_REAL :: factor + ! Set up shorthands ! ----------------- dx = CCTK_DELTA_SPACE(1) @@ -66,19 +68,19 @@ jend = cctk_lsh(2)-1 kend = cctk_lsh(3)-1 + factor = 2*(1 - (dt2)*(dx2i + dy2i + dz2i)) + ! Do the evolution ! ---------------- do k = kstart, kend do j = jstart, jend do i = istart, iend - phi_tmp(i,j,k) = - 1 2.0*(1.0 - (dt2)*(dx2i + - 2 dy2i + dz2i))*phi(i,j,k) - - 3 phi_old(i,j,k) + (dt2) * - 5 ((phi(i+1,j,k)+phi(i-1,j,k))*dx2i - 6 +(phi(i,j+1,k)+phi(i,j-1,k))*dy2i - 7 +(phi(i,j,k+1)+phi(i,j,k-1))*dz2i) + phi_n(i,j,k) = factor*phi(i,j,k) - + 1 phi_p(i,j,k) + (dt2) * + 2 ((phi(i+1,j,k)+phi(i-1,j,k))*dx2i + 3 +(phi(i,j+1,k)+phi(i,j-1,k))*dy2i + 4 +(phi(i,j,k+1)+phi(i,j,k-1))*dz2i) end do end do @@ -86,18 +88,12 @@ ! Synchronize ! ----------- - call CCTK_SyncGroup(cctkGH,"wavetoyf90::temps") + call CCTK_SyncGroup(cctkGH,"wavetoy::scalarevolve") ! Apply boundary conditions ! ------------------------- call WaveToyF90_Boundaries(CCTK_PASS_FTOF) -! Update timeslices -! ----------------- - phi_old = phi - phi = phi_tmp - - end subroutine WaveToyF90_Evolution @@ -129,13 +125,13 @@ CCTK_REAL,parameter :: zero = 0.0 CCTK_REAL,parameter :: one = 1.0 - call CartSymBCGroup(ierr,cctkGH,"wavetoyf90::temps") + call CartSymBCGroup(ierr,cctkGH,"wavetoy::scalarevolve") if (CCTK_EQUALS(bound,"flat")) then - call FlatBCVar(ierr,cctkGH,sw,"wavetoyf90::phi_tmp") + call FlatBCVar(ierr,cctkGH,sw,"wavetoy::phi") else if (CCTK_EQUALS(bound,"radiation")) then call RadiativeBCVar(ierr,cctkGH,zero,one,sw, - & "wavetoyf90::phi_tmp","wavetoy::phi") + & "wavetoy::phi","wavetoy::phi") end if if (ierr < 0) then |