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C $Header: /u/gcmpack/MITgcm/pkg/streamice/streamice_init_varia.F,v 1.6 2011/06/29 16:24:10 dng Exp $ |
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C $Name: $ |
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|
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#include "STREAMICE_OPTIONS.h" |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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|
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CBOP |
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SUBROUTINE STREAMICE_VEL_SOLVE( myThid ) |
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C /============================================================\ |
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C | SUBROUTINE | |
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C | o | |
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C |============================================================| |
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C | | |
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C \============================================================/ |
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IMPLICIT NONE |
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|
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C === Global variables === |
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#include "SIZE.h" |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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#include "STREAMICE.h" |
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#include "STREAMICE_CG.h" |
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|
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C !INPUT/OUTPUT ARGUMENTS |
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INTEGER myThid |
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|
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#ifdef ALLOW_STREAMICE |
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|
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C LOCAL VARIABLES |
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|
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! real, dimension(:,:), pointer :: TAUDX, TAUDY, u_prev_iterate, v_prev_iterate, & |
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! u_bdry_cont, v_bdry_cont, Au, Av, err_u, err_v, & |
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! geolonq, geolatq, u_last, v_last, float_cond, H_node |
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! type(ocean_grid_type), pointer :: G |
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! integer :: conv_flag, i, j, k,l, iter, isym, & |
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! isdq, iedq, jsdq, jedq, isd, ied, jsd, jed, isumstart, jsumstart, nodefloat, nsub |
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! real :: err_max, err_tempu, err_tempv, err_init, area, max_vel, tempu, tempv, rhoi, rhow |
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|
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INTEGER conv_flag, i, j, k, l, iter, cg_iters, bi, bj |
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INTEGER iter_numconv |
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_RL err_max, err_tempu, err_tempv, err_init, area |
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_RL max_vel, tempu, tempv, err_lastchange, cgtol |
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CHARACTER*(MAX_LEN_MBUF) msgBuf |
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! _RL taudx (1-OLx:sNx+OLx,1-OLy:sNy+Oly,nSx,nSy) |
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! _RL taudy (1-OLx:sNx+OLx,1-OLy:sNy+Oly,nSx,nSy) |
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|
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CALL STREAMICE_DRIVING_STRESS (myThid) |
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|
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cgtol = streamice_cg_tol |
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|
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! CALL WRITE_FULLARRAY_RL ("taudy_SI",taudy_SI,1,0,0,1,0,myThid) |
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|
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_EXCH_XY_RL ( taudx_SI , myThid ) |
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_EXCH_XY_RL ( taudy_SI , myThid ) |
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|
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! CALL WRITE_FULLARRAY_RL ("taudy_SI_2",taudy_SI,1,0,0,1,0,myThid) |
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|
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1-OLy,sNy+OLy |
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DO i=1-OLx,sNx+OLx |
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u_old_SI (i,j,bi,bj) = U_streamice (i,j,bi,bj) |
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v_old_SI (i,j,bi,bj) = V_streamice (i,j,bi,bj) |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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CALL STREAMICE_VISC_BETA ( myThid ) |
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|
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_EXCH_XY_RL ( tau_beta_eff_streamice , myThid ) |
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_EXCH_XY_RL ( visc_streamice , myThid ) |
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|
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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Au_SI (i,j,bi,bj) = 0. _d 0 |
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Av_SI (i,j,bi,bj) = 0. _d 0 |
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ubd_SI (i,j,bi,bj) = 0. _d 0 |
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vbd_SI (i,j,bi,bj) = 0. _d 0 |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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CALL STREAMICE_CG_BOUND_VALS( myThid, |
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O ubd_SI, |
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O vbd_SI) |
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|
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CALL STREAMICE_CG_ACTION( myThid, |
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O Au_SI, |
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O Av_SI, |
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I U_streamice, |
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I V_streamice, |
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I 0, sNx+1, 0, sNy+1 ) |
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|
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err_init = 0. _d 0 |
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err_tempu = 0. _d 0 |
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err_tempv = 0. _d 0 |
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|
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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IF (STREAMICE_umask(i,j,bi,bj).eq.1) THEN |
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err_tempu = |
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& ABS (Au_SI(i,j,bi,bj)+ubd_SI(i,j,bi,bj) - |
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& taudx_SI(i,j,bi,bj)) |
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ENDIF |
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IF (STREAMICE_vmask(i,j,bi,bj).eq.1) THEN |
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err_tempv = MAX( err_tempu, |
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& ABS (Av_SI(i,j,bi,bj)+vbd_SI(i,j,bi,bj) - |
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& taudy_SI(i,j,bi,bj))) |
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ENDIF |
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IF (err_tempv .ge. err_init) err_init = err_tempv |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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CALL GLOBAL_MAX_R8 (err_init, myThid) |
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|
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iter_numconv = 0 |
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err_max = err_init |
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err_lastchange = err_init |
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|
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DO iter=1,streamice_max_nl_iter |
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|
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C To avoid using "exit", loop goes through all iterations |
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C but after convergence loop does nothing |
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|
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IF (err_max .GT. streamice_nonlin_tol * err_init) THEN |
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iter_numconv = iter_numconv + 1 |
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CALL STREAMICE_CG_SOLVE( |
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& U_streamice, |
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& V_streamice, |
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& taudx_SI, |
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& taudy_SI, |
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& myThid , cgtol , cg_iters) |
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|
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|
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WRITE(msgBuf,'(A,I5,A,I4,A)') 'streamice linear solve number', |
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& iter, " ", |
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& cg_iters, |
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& ' iterations ' |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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|
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CALL STREAMICE_VISC_BETA ( myThid ) |
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|
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_EXCH_XY_RL ( tau_beta_eff_streamice , myThid ) |
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_EXCH_XY_RL ( visc_streamice , myThid ) |
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|
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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Au_SI (i,j,bi,bj) = 0. _d 0 |
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Av_SI (i,j,bi,bj) = 0. _d 0 |
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ubd_SI (i,j,bi,bj) = 0. _d 0 |
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vbd_SI (i,j,bi,bj) = 0. _d 0 |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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|
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CALL STREAMICE_CG_BOUND_VALS( myThid, |
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O ubd_SI, |
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O vbd_SI) |
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|
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CALL STREAMICE_CG_ACTION( myThid, |
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O Au_SI, |
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O Av_SI, |
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I U_streamice, |
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I V_streamice, |
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I 0, sNx+1, 0, sNy+1 ) |
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|
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err_max = 0. _d 0 |
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err_tempu = 0. _d 0 |
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err_tempv = 0. _d 0 |
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|
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DO bj = myByLo(myThid), myByHi(myThid) |
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DO bi = myBxLo(myThid), myBxHi(myThid) |
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DO j=1,sNy |
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DO i=1,sNx |
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IF (STREAMICE_umask(i,j,bi,bj).eq.1) THEN |
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err_tempu = |
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& ABS (Au_SI(i,j,bi,bj)+ubd_SI(i,j,bi,bj) - |
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& taudx_SI(i,j,bi,bj)) |
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ENDIF |
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IF (STREAMICE_vmask(i,j,bi,bj).eq.1) THEN |
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err_tempv = MAX( err_tempu, |
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& ABS (Av_SI(i,j,bi,bj)+vbd_SI(i,j,bi,bj) - |
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& taudy_SI(i,j,bi,bj))) |
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ENDIF |
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IF (err_tempv .ge. err_max) err_max = err_tempv |
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ENDDO |
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ENDDO |
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ENDDO |
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ENDDO |
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CALL GLOBAL_MAX_R8 (err_max, myThid) |
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WRITE(msgBuf,'(A,F11.7)') 'err/err_init', |
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& err_max/err_init |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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|
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IF (err_max<err_lastchange*1.e-2 .and. |
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& STREAMICE_lower_cg_tol) THEN |
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cgtol = cgtol * 5.e-2 |
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err_lastchange = err_max |
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WRITE(msgBuf,'(A,F11.7)') 'new cg tol: ', |
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& cgtol |
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CALL PRINT_MESSAGE( msgBuf, standardMessageUnit, |
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& SQUEEZE_RIGHT , 1) |
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ENDIF |
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|
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ENDIF ! (err_max .GT. streamice_nonlin_tol * err_init) |
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ENDDO |
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|
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if (iter_numconv .lt. streamice_max_nl_iter) then |
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PRINT *, "VELOCITY SOLVE CONVERGED, ", iter_numconv, |
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& " iterations" |
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else |
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PRINT *, "VELOCITY SOLVE DID NOT CONVERGE IN ", |
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& iter, " iterations" |
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endif |
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|
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_EXCH_XY_RL (U_streamice, myThid) |
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_EXCH_XY_RL (V_streamice, myThid) |
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|
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#endif |
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RETURN |
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END |
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