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C $Header: /u/gcmpack/models/MITgcmUV/verification/internal_wave/code/set_obcs.F,v 1.2 2001/02/04 14:38:53 cnh Exp $ |
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C $Name: $ |
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#include "CPP_OPTIONS.h" |
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SUBROUTINE SET_OBCS( K, bi, bj, myCurrentTime, myThid ) |
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C /==========================================================\ |
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C | SUBROUTINE SET_OBCS | |
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C | o Set boundary conditions at open boundaries | |
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C |==========================================================| |
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C | | |
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C | Specific OBCs for internal wave problem. | |
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C | slegg@whoi.edu | |
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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 "DYNVARS.h" |
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#include "GRID.h" |
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#include "OBCS.h" |
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|
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C == Routine arguments == |
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C myThid - Number of this instance of INI_DEPTHS |
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INTEGER K, bi, bj |
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_RL myCurrentTime |
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INTEGER myThid |
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|
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#ifdef ALLOW_OBCS |
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|
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C == Local variables == |
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C xG, yG - Global coordinate location. |
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C zG |
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C zUpper - Work arrays for upper and lower |
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C zLower cell-face heights. |
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C phi - Temporary scalar |
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C iG, jG - Global coordinate index |
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C bi,bj - Loop counters |
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C zUpper - Temporary arrays holding z coordinates of |
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C zLower upper and lower faces. |
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C I,i,K |
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INTEGER iG, jG |
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INTEGER I, J |
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_RL obTimeScale,Uinflow,rampTime2 |
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_RL vertStructWst(Nr) |
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_RL mz,strat,kx |
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_RL tmpsum |
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_RL CVEL |
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_RL ab05, ab15 |
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|
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C Vertical mode number |
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mz=1.0 |
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C Stratification |
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strat = 1.0 _d -6 / (gravity*tAlpha) |
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|
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C Create a vertical structure function with zero mean |
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tmpsum=0. |
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do J=1,Nr |
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vertStructWst(J)=cos(mz*PI* (rC(J)/rF(Nr+1)) ) |
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tmpsum=tmpsum+vertStructWst(J)*drF(J) |
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enddo |
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tmpsum=tmpsum/rF(Nr+1) |
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do J=1,Nr |
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vertStructWst(J)=vertStructWst(J)-tmpsum |
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enddo |
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c |
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obTimeScale = 44567.0 |
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kx=mz*2.*pi/400.0*sqrt((2.0*pi*2.0*pi/(obTimeScale*obTimeScale) |
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& - f0*f0)/(1.0 _d -6 |
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& - 2.0*pi*2.0*pi/(obTimeScale*obTimeScale))) |
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Uinflow = 0.024 |
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rampTime2 = 4*44567.0 |
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|
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C Eastern boundary |
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DO J=1-Oly,sNy+Oly |
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IF (OB_Ie(J,bi,bj).NE.0) THEN |
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OBEu(J,K,bi,bj)=0. |
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OBEv(J,K,bi,bj)=0. |
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OBEt(J,K,bi,bj)=tRef(K) |
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#ifdef ALLOW_NONHYDROSTATIC |
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OBEw(J,K,bi,bj)=0. |
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#endif |
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ENDIF |
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ENDDO |
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|
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|
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C Western boundary |
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DO J=1-Oly,sNy+Oly |
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IF (OB_Iw(J,bi,bj).NE.0) THEN |
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OBWu(J,K,bi,bj)=0. |
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& +Uinflow |
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& *vertStructWst(K) |
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& *sin(2.*PI*myCurrentTime/obTimeScale) |
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& *(exp(myCurrentTime/rampTime2) |
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& - exp(-myCurrentTime/rampTime2)) |
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& /(exp(myCurrentTime/rampTime2) |
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& + exp(-myCurrentTime/rampTime2)) |
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& *cos(kx*(3-2-0.5)*delX(1)) |
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OBWv(J,K,bi,bj)=0. |
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& +Uinflow |
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& *f0/(2.0*PI/obTimeScale) |
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& *vertStructWst(K) |
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& *cos(2.*PI*myCurrentTime/obTimeScale ) |
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& * (exp(myCurrentTime/rampTime2) |
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& - exp(-myCurrentTime/rampTime2)) |
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& /(exp(myCurrentTime/rampTime2) |
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& + exp(-myCurrentTime/rampTime2)) |
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OBWt(J,K,bi,bj)=tRef(K) |
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& + Uinflow*sin(mz*PI*(float(k)-0.5)/float(Nr)) |
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& * sin(2.0*PI*myCurrentTime/obTimeScale) |
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& *sqrt(strat/(tAlpha*gravity)) |
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& *sqrt(2.0*PI/obTimeScale*2.0*PI/obTimeScale - f0*f0) |
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& /(2.0*PI/obTimeScale) |
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& * (exp(myCurrentTime/rampTime2) |
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& - exp(-myCurrentTime/rampTime2)) |
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& /(exp(myCurrentTime/rampTime2) |
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& + exp(-myCurrentTime/rampTime2)) |
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#ifdef ALLOW_NONHYDROSTATIC |
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OBWw(J,K,bi,bj)=-Uinflow |
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& *sqrt(2.0*PI/obTimeScale*2.0*PI/obTimeScale - f0*f0) |
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& /sqrt(strat*strat - 2.0*PI/obTimeScale*2.0*PI/obTimeScale) |
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& *sin(mz*PI*(float(k)-0.5)/float(Nr)) |
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& *cos(2.*PI*myCurrentTime/obTimeScale) |
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& *(exp(myCurrentTime/rampTime2) |
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& - exp(-myCurrentTime/rampTime2)) |
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& /(exp(myCurrentTime/rampTime2) |
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& + exp(-myCurrentTime/rampTime2)) |
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|
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#endif |
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ENDIF |
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ENDDO |
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|
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C Northern boundary |
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DO I=1-Olx,sNx+Olx |
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IF (OB_Jn(I,bi,bj).NE.0) THEN |
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OBNu(I,K,bi,bj)=0. |
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OBNv(I,K,bi,bj)=0. |
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OBNt(I,K,bi,bj)=tRef(K) |
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#ifdef ALLOW_NONHYDROSTATIC |
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OBNw(I,K,bi,bj)=0. |
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#endif |
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ENDIF |
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ENDDO |
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|
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C Southern boundary |
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DO I=1-Olx,sNx+Olx |
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IF (OB_Js(I,bi,bj).NE.0) THEN |
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OBSu(I,K,bi,bj)=0. |
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OBSv(I,K,bi,bj)=0. |
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OBSt(I,K,bi,bj)=tRef(K) |
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#ifdef ALLOW_NONHYDROSTATIC |
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OBSw(I,K,bi,bj)=0. |
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#endif |
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ENDIF |
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ENDDO |
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|
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#endif |
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RETURN |
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END |
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