drain_swept_flux_y Subroutine

private pure subroutine drain_swept_flux_y(nx, ny, nz, areaT, uhh, hprev, aL, aR, a6, F)

Meridional analogue of drain_swept_flux_x.

Arguments

Type IntentOptional Attributes Name
integer, intent(in) :: nx
integer, intent(in) :: ny
integer, intent(in) :: nz
real(kind=wp), intent(in) :: areaT(nx,ny)
real(kind=wp), intent(in) :: uhh(nx,ny+1,nz)
real(kind=wp), intent(in) :: hprev(nx,ny,nz)
real(kind=wp), intent(in) :: aL(nx,ny,nz)
real(kind=wp), intent(in) :: aR(nx,ny,nz)
real(kind=wp), intent(in) :: a6(nx,ny,nz)
real(kind=wp), intent(inout) :: F(nx,ny+1,nz)

Calls

proc~~drain_swept_flux_y~~CallsGraph proc~drain_swept_flux_y drain_swept_flux_y local local proc~drain_swept_flux_y->local

Called by

proc~~drain_swept_flux_y~~CalledByGraph proc~drain_swept_flux_y drain_swept_flux_y proc~continuity_tracer_drain continuity_tracer_drain proc~continuity_tracer_drain->proc~drain_swept_flux_y proc~ocean_dyn_flush_tracer_window ocean_dyn_flush_tracer_window proc~ocean_dyn_flush_tracer_window->proc~continuity_tracer_drain proc~ocean_dyn_step ocean_dyn_step proc~ocean_dyn_step->proc~continuity_tracer_drain proc~ocean_dyn_step_split ocean_dyn_step_split proc~ocean_dyn_step_split->proc~continuity_tracer_drain proc~driver_run_ocean driver_run_ocean proc~driver_run_ocean->proc~ocean_dyn_flush_tracer_window proc~engine_step engine_step proc~driver_run_ocean->proc~engine_step proc~engine_step->proc~ocean_dyn_step proc~engine_step->proc~ocean_dyn_step_split proc~rdb_ocean_set_tracer rdb_ocean_set_tracer proc~rdb_ocean_set_tracer->proc~ocean_dyn_flush_tracer_window proc~driver_run driver_run proc~driver_run->proc~driver_run_ocean proc~rdb_ocean_step rdb_ocean_step proc~rdb_ocean_step->proc~engine_step

Variables

Type Visibility Attributes Name Initial
real(kind=wp), private :: cfl
real(kind=wp), private :: conc
integer, private :: i
integer, private :: j
integer, private :: k
real(kind=wp), private :: u
real(kind=wp), private :: vol

Source Code

   pure subroutine drain_swept_flux_y(nx, ny, nz, areaT, uhh, hprev, aL, aR, a6, F)
      !! Meridional analogue of drain_swept_flux_x.
      integer, intent(in) :: nx, ny, nz
      real(wp), intent(in) :: areaT(nx, ny)
      real(wp), intent(in) :: uhh(nx, ny + 1, nz)
      real(wp), intent(in) :: hprev(nx, ny, nz)
      real(wp), intent(in) :: aL(nx, ny, nz), aR(nx, ny, nz), a6(nx, ny, nz)
      real(wp), intent(inout) :: F(nx, ny + 1, nz)
      integer :: i, j, k
      real(wp) :: u, cfl, vol, conc
      ! Array-edge faces (1, ny+1) have no donor cell (cell 0 / ny+1 are
      ! off-array); they feed only re-wrapped ghosts, so zero them.
      ! Explicit do concurrent (not F(:,1,:)=0 array syntax -- offload).
      do concurrent(k=1:nz, i=1:nx)
         F(i, 1, k) = 0.0_wp
         F(i, ny + 1, k) = 0.0_wp
      end do
      ! Interior faces 2..ny: donors j-1 >= 1 (u>0) and j <= ny (u<0) in
      ! range.  (Was j=1:ny+1, reading cell 0 / ny+1 -- latent OOB.)
      do concurrent(k=1:nz, j=2:ny, i=1:nx) local(u, cfl, vol, conc)
         u = uhh(i, j, k)
         if (u > 0.0_wp) then
            vol = max(areaT(i, j - 1)*hprev(i, j - 1, k), DRAIN_MIN_VOL)
            cfl = min(u/vol, 1.0_wp)
            conc = aR(i, j - 1, k) - 0.5_wp*cfl* &
                   ((aR(i, j - 1, k) - aL(i, j - 1, k)) &
                    - a6(i, j - 1, k)*(1.0_wp - (2.0_wp/3.0_wp)*cfl))
            F(i, j, k) = u*conc
         else if (u < 0.0_wp) then
            vol = max(areaT(i, j)*hprev(i, j, k), DRAIN_MIN_VOL)
            cfl = min(-u/vol, 1.0_wp)
            conc = aL(i, j, k) + 0.5_wp*cfl* &
                   ((aR(i, j, k) - aL(i, j, k)) &
                    + a6(i, j, k)*(1.0_wp - (2.0_wp/3.0_wp)*cfl))
            F(i, j, k) = u*conc
         else
            F(i, j, k) = 0.0_wp
         end if
      end do
   end subroutine drain_swept_flux_y