#include "cppdefs.h" MODULE stiffness_mod ! !svn $Id: stiffness.F 380 2009-08-08 20:09:21Z arango $ !======================================================================= ! Copyright (c) 2002-2009 The ROMS/TOMS Group ! ! Licensed under a MIT/X style license ! ! See License_ROMS.txt Hernan G. Arango ! !========================================== Alexander F. Shchepetkin === ! ! ! This routine surveys the 3D grid in order to determine maximum ! ! grid stiffness ratio: ! ! ! ! z(i,j,k)-z(i-1,j,k)+z(i,j,k-1)-z(i-1,j,k-1) ! ! r_x = --------------------------------------------- ! ! z(i,j,k)+z(i-1,j,k)-z(i,j,k-1)-z(i-1,j,k-1) ! ! ! ! This is done for diagnostic purposes and it does not affect the ! ! computations. ! ! ! !======================================================================= ! implicit none PRIVATE PUBLIC :: stiffness CONTAINS ! !*********************************************************************** SUBROUTINE stiffness (ng, tile, model) !*********************************************************************** ! USE mod_param USE mod_grid USE mod_ocean ! ! Imported variable declarations. ! integer, intent(in) :: ng, tile, model ! ! Local variable declarations. ! #include "tile.h" ! CALL stiffness_tile (ng, tile, model, & & LBi, UBi, LBj, UBj, & & IminS, ImaxS, JminS, JmaxS, & #ifdef MASKING & GRID(ng) % rmask, & & GRID(ng) % umask, & & GRID(ng) % vmask, & #endif & GRID(ng) % h, & & GRID(ng) % omn, & #ifdef SOLVE3D & GRID(ng) % Hz, & & GRID(ng) % z_w, & #endif & OCEAN(ng)% zeta) RETURN END SUBROUTINE stiffness ! !*********************************************************************** SUBROUTINE stiffness_tile (ng, tile, model, & & LBi, UBi, LBj, UBj, & & IminS, ImaxS, JminS, JmaxS, & #ifdef MASKING & rmask, umask, vmask, & #endif & h, omn, & #ifdef SOLVE3D & Hz, z_w, & #endif & zeta) !*********************************************************************** ! USE mod_param USE mod_parallel USE mod_iounits USE mod_scalars #ifdef DISTRIBUTE ! USE distribute_mod, ONLY : mp_reduce #endif ! implicit none ! ! Imported variable declarations. ! integer, intent(in) :: ng, tile, model integer, intent(in) :: LBi, UBi, LBj, UBj integer, intent(in) :: IminS, ImaxS, JminS, JmaxS #ifdef ASSUMED_SHAPE # ifdef MASKING real(r8), intent(in) :: rmask(LBi:,LBj:) real(r8), intent(in) :: umask(LBi:,LBj:) real(r8), intent(in) :: vmask(LBi:,LBj:) # endif real(r8), intent(in) :: h(LBi:,LBj:) real(r8), intent(in) :: omn(LBi:,LBj:) # ifdef SOLVE3D real(r8), intent(in) :: Hz(LBi:,LBj:,:) real(r8), intent(in) :: z_w(LBi:,LBj:,0:) # endif real(r8), intent(in) :: zeta(LBi:,LBj:,:) #else # ifdef MASKING real(r8), intent(in) :: rmask(LBi:UBi,LBj:UBj) real(r8), intent(in) :: umask(LBi:UBi,LBj:UBj) real(r8), intent(in) :: vmask(LBi:UBi,LBj:UBj) # endif real(r8), intent(in) :: h(LBi:UBi,LBj:UBj) real(r8), intent(in) :: omn(LBi:UBi,LBj:UBj) # ifdef SOLVE3D real(r8), intent(in) :: Hz(LBi:UBi,LBj:UBj,N(ng)) real(r8), intent(in) :: z_w(LBi:UBi,LBj:UBj,0:N(ng)) # endif real(r8), intent(in) :: zeta(LBi:UBi,LBj:UBj,3) #endif ! ! Local variable declarations. ! integer :: NSUB, i, j, k real(r8) :: cff, ratio real(r8) :: my_rx0 = 0.0_r8 real(r8) :: my_rx1 = 0.0_r8 real(r8) :: my_volume0 = 0.0_r8 real(r8) :: my_volume1 = 1.0E+20_r8 real(r8) :: my_volume2 = 0.0_r8 #ifdef DISTRIBUTE real(r8), dimension(5) :: buffer character (len=3), dimension(5) :: op_handle #endif #include "set_bounds.h" #ifdef SOLVE3D ! !----------------------------------------------------------------------- ! Compute grid stiffness. !----------------------------------------------------------------------- ! DO j=Jstr,Jend DO i=IstrU,Iend # ifdef MASKING IF (umask(i,j).gt.0.0_r8) THEN # endif my_rx0=MAX(my_rx0,ABS((z_w(i,j,0)-z_w(i-1,j,0))/ & & (z_w(i,j,0)+z_w(i-1,j,0)))) DO k=1,N(ng) my_rx1=MAX(my_rx1,ABS((z_w(i,j,k )-z_w(i-1,j,k )+ & & z_w(i,j,k-1)-z_w(i-1,j,k-1))/ & & (z_w(i,j,k )+z_w(i-1,j,k )- & & z_w(i,j,k-1)-z_w(i-1,j,k-1)))) END DO # ifdef MASKING END IF # endif END DO END DO DO j=JstrV,Jend DO i=Istr,Iend # ifdef MASKING IF (vmask(i,j).gt.0.0_r8) THEN # endif my_rx0=MAX(my_rx0,ABS((z_w(i,j,0)-z_w(i,j-1,0))/ & & (z_w(i,j,0)+z_w(i,j-1,0)))) DO k=1,N(ng) my_rx1=MAX(my_rx1,ABS((z_w(i,j,k )-z_w(i,j-1,k )+ & & z_w(i,j,k-1)-z_w(i,j-1,k-1))/ & & (z_w(i,j,k )+z_w(i,j-1,k )- & & z_w(i,j,k-1)-z_w(i,j-1,k-1)))) END DO # ifdef MASKING END IF # endif END DO END DO #endif ! !------------------------------------------------------------------------- ! Compute initial basin volume and grid cell minimum and maximum volumes. !------------------------------------------------------------------------- ! #ifdef SOLVE3D DO k=1,N(ng) DO j=Jstr,Jend DO i=Istr,Iend # ifdef MASKING IF (rmask(i,j).gt.0.0_r8) THEN # endif cff=omn(i,j)*Hz(i,j,k) my_volume0=my_volume0+cff my_volume1=MIN(my_volume1,cff) my_volume2=MAX(my_volume2,cff) # ifdef MASKING END IF # endif END DO END DO END DO #else DO j=Jstr,Jend DO i=Istr,Iend # ifdef MASKING IF (rmask(i,j).gt.0.0_r8) THEN # endif cff=omn(i,j)*(zeta(i,j,1)+h(i,j)) my_volume0=my_volume0+cff my_volume1=MIN(my_volume1,cff) my_volume2=MAX(my_volume2,cff) # ifdef MASKING END IF # endif END DO END DO #endif ! !------------------------------------------------------------------------- ! Compute global values. !------------------------------------------------------------------------- ! IF (SOUTH_WEST_CORNER.and. & & NORTH_EAST_CORNER) THEN NSUB=1 ! non-tiled application ELSE NSUB=NtileX(ng)*NtileE(ng) ! tiled application END IF !$OMP CRITICAL (R_FACTOR) IF (tile_count.eq.0) THEN rx0=my_rx0 rx1=my_rx1 TotVolume=my_volume0 MinVolume=my_volume1 MaxVolume=my_volume2 ELSE rx0=MAX(rx0,my_rx0) rx1=MAX(rx1,my_rx1) TotVolume=my_volume0 MinVolume=MIN(MinVolume,my_volume1) MaxVolume=MAX(MaxVolume,my_volume2) END IF tile_count=tile_count+1 IF (tile_count.eq.NSUB) THEN tile_count=0 #ifdef DISTRIBUTE buffer(1)=rx0 buffer(2)=rx1 buffer(3)=TotVolume buffer(4)=MinVolume buffer(5)=MaxVolume op_handle(1)='MAX' op_handle(2)='MAX' op_handle(3)='SUM' op_handle(4)='MIN' op_handle(5)='MAX' CALL mp_reduce (ng, model, 5, buffer, op_handle) rx0=buffer(1) rx1=buffer(2) TotVolume=buffer(3) MinVolume=buffer(4) MaxVolume=buffer(5) #endif IF (Master) THEN #ifdef SOLVE3D WRITE (stdout,10) rx0, rx1 10 FORMAT (/,' Maximum grid stiffness ratios: rx0 = ',1pe14.6, & & ' (Beckmann and Haidvogel)',/,t34,'rx1 = ',1pe14.6, & & ' (Haney)',/) #endif IF (MinVolume.ne.0.0_r8) THEN ratio=MaxVolume/MinVolume ELSE ratio=0.0_r8 END IF WRITE (stdout,20) TotVolume, MinVolume, MaxVolume, ratio 20 FORMAT (/,' Initial basin volumes: TotVolume = ',1p,e17.10,0p, & & ' m3',/,t25,'MinVolume = ',1p,e17.10,0p,' m3', & & /,t25,'MaxVolume = ',1p,e17.10,0p,' m3', & & /,t25,' Max/Min = ',1p,e17.10,0p,/) END IF END IF !$OMP END CRITICAL (R_FACTOR) RETURN END SUBROUTINE stiffness_tile END MODULE stiffness_mod