verification/exp4/set_obcs.F

C $Header$

#include "CPP_OPTIONS.h"

CStartOfInterface
      SUBROUTINE SET_OBCS( myCurrentTime, myThid )
C     /==========================================================\
C     | SUBROUTINE SET_OBCS                                      |
C     | o Set boundary conditions at open boundaries             |
C     |==========================================================|
C     |                                                          |
C     \==========================================================/

C     === Global variables ===
#include "SIZE.h"
#include "EEPARAMS.h"
#include "PARAMS.h"
#include "DYNVARS.h"
#include "OBCS.h"

C     == Routine arguments ==
C     myThid -  Number of this instance of INI_DEPTHS
      _RL myCurrentTime
      INTEGER myThid
CEndOfInterface

C     == Local variables ==
C     xG, yG - Global coordinate location.
C     zG
C     zUpper - Work arrays for upper and lower
C     zLower   cell-face heights.
C     phi    - Temporary scalar
C     iG, jG - Global coordinate index
C     bi,bj  - Loop counters
C     zUpper - Temporary arrays holding z coordinates of
C     zLower   upper and lower faces.
C     I,i,K
      INTEGER iG, jG
      INTEGER bi, bj
      INTEGER  I,  J, K
      _RL obTimeScale,Uinflow
c
      obTimeScale = 2000.0
      Uinflow = 0.25

      DO bj = myByLo(myThid), myByHi(myThid)
       DO bi = myBxLo(myThid), myBxHi(myThid)
        DO K=1,Nr
         DO J=1-Oly,sNy+Oly
          OBEu(J,K,bi,bj)=Uinflow
c    &       *sin(2.*PI*myCurrentTime/obTimeScale)
c    &       *max(myCurrentTime/obTimeScale,1.)
          OBEv(J,K,bi,bj)=0.
          OBEt(J,K,bi,bj)=tRef(K)
          OBWu(J,K,bi,bj)=Uinflow
c    &       *sin(2.*PI*myCurrentTime/obTimeScale)
c    &       *max(myCurrentTime/obTimeScale,1.)
          OBWv(J,K,bi,bj)=0.
          OBWt(J,K,bi,bj)=tRef(K)
         ENDDO
         DO I=1-Olx,sNx+Olx
          OBNu(I,K,bi,bj)=Uinflow
          OBNv(I,K,bi,bj)=0.
          OBNt(I,K,bi,bj)=tRef(K)
          OBSu(I,K,bi,bj)=Uinflow
          OBSv(I,K,bi,bj)=0.
          OBSt(I,K,bi,bj)=tRef(K)
         ENDDO
        ENDDO
       ENDDO
      ENDDO

#ifdef SIMPLE_OBCS
C This is an example of some rudimentary OBCs.
C These work but aren't very sophisticated...
C (The above specified OBCs produce nicer results!)
C [Remove the CPP #ifdef and #endif to use this code]

C     Simple upwind-type radiation OBCs
      DO bj = myByLo(myThid), myByHi(myThid)
      DO bi = myBxLo(myThid), myBxHi(myThid)

       DO K=1,Nr
        DO J=1-Oly,sNy+Oly
C        Eastern boundary
         IF (uVel( OB_Ie(J,bi,bj) ,J,K,bi,bj).LE.0.) THEN
C         Incoming flow or forced in-flow
          OBEu(J,K,bi,bj)=Uinflow
          OBEt(J,K,bi,bj)=tRef(K)
         ELSE
C         Outgoing flow
          OBEu(J,K,bi,bj)=uVel( OB_Ie(J,bi,bj)-1 ,J,K,bi,bj)
          OBEt(J,K,bi,bj)=theta( OB_Ie(J,bi,bj)-1 ,J,K,bi,bj)
         ENDIF
         OBEv(J,K,bi,bj)=0.
C        Western boundary
         IF (uVel( OB_Iw(J,bi,bj)+1 ,J,K,bi,bj).GE.0.) THEN
C         Incoming flow or forced in-flow
          OBWu(J,K,bi,bj)=Uinflow
          OBWt(J,K,bi,bj)=tRef(K)
         ELSE
C         Outgoing flow
          OBEu(J,K,bi,bj)=uVel( OB_Iw(J,bi,bj)+1 ,J,K,bi,bj)
          OBEt(J,K,bi,bj)=theta( OB_Iw(J,bi,bj)+1 ,J,K,bi,bj)
         ENDIF
         OBWv(J,K,bi,bj)=0.
        ENDDO
       ENDDO

       DO K=1,Nr
        DO I=1-Olx,sNx+Olx
C        Northern boundary
         IF (vVel(I, OB_Jn(I,bi,bj) ,K,bi,bj).LE.0.) THEN
C         Incoming flow or forced in-flow
          OBNv(I,K,bi,bj)=0.
          OBNt(I,K,bi,bj)=tRef(K)
         ELSE
C         Outgoing
          OBNv(I,K,bi,bj)=vVel(I, OB_Jn(I,bi,bj)-1 ,K,bi,bj)
          OBNt(I,K,bi,bj)=theta(I, OB_Jn(I,bi,bj)-1 ,K,bi,bj)
         ENDIF
         OBNu(I,K,bi,bj)=Uinflow
C        Southern boundary
         IF (vVel(I, OB_Js(I,bi,bj)+1 ,K,bi,bj).GE.0.) THEN
C         Incoming flow or forced in-flow
          OBSv(I,K,bi,bj)=0.
          OBSt(I,K,bi,bj)=tRef(K)
         ELSE
C         Outgoing
          OBSv(I,K,bi,bj)=vVel(I, OB_Js(I,bi,bj)+1 ,K,bi,bj)
          OBSt(I,K,bi,bj)=theta(I, OB_Js(I,bi,bj)+1 ,K,bi,bj)
         ENDIF
         OBSu(I,K,bi,bj)=Uinflow
        ENDDO
       ENDDO

      ENDDO
      ENDDO
#endif


C
      RETURN
      END
1	C $Header$
2
3	#include "CPP_OPTIONS.h"
4
5	CStartOfInterface
6	SUBROUTINE SET_OBCS( myCurrentTime, myThid )
7	C /==========================================================\
8	C \| SUBROUTINE SET_OBCS \|
9	C \| o Set boundary conditions at open boundaries \|
10	C \|==========================================================\|
11	C \| \|
12	C \==========================================================/
13
14	C === Global variables ===
15	#include "SIZE.h"
16	#include "EEPARAMS.h"
17	#include "PARAMS.h"
18	#include "DYNVARS.h"
19	#include "OBCS.h"
20
21	C == Routine arguments ==
22	C myThid - Number of this instance of INI_DEPTHS
23	_RL myCurrentTime
24	INTEGER myThid
25	CEndOfInterface
26
27	C == Local variables ==
28	C xG, yG - Global coordinate location.
29	C zG
30	C zUpper - Work arrays for upper and lower
31	C zLower cell-face heights.
32	C phi - Temporary scalar
33	C iG, jG - Global coordinate index
34	C bi,bj - Loop counters
35	C zUpper - Temporary arrays holding z coordinates of
36	C zLower upper and lower faces.
37	C I,i,K
38	INTEGER iG, jG
39	INTEGER bi, bj
40	INTEGER I, J, K
41	_RL obTimeScale,Uinflow
42	c
43	obTimeScale = 2000.0
44	Uinflow = 0.25
45
46	DO bj = myByLo(myThid), myByHi(myThid)
47	DO bi = myBxLo(myThid), myBxHi(myThid)
48	DO K=1,Nr
49	DO J=1-Oly,sNy+Oly
50	OBEu(J,K,bi,bj)=Uinflow
51	c & sin(2.PI*myCurrentTime/obTimeScale)
52	c & *max(myCurrentTime/obTimeScale,1.)
53	OBEv(J,K,bi,bj)=0.
54	OBEt(J,K,bi,bj)=tRef(K)
55	OBWu(J,K,bi,bj)=Uinflow
56	c & sin(2.PI*myCurrentTime/obTimeScale)
57	c & *max(myCurrentTime/obTimeScale,1.)
58	OBWv(J,K,bi,bj)=0.
59	OBWt(J,K,bi,bj)=tRef(K)
60	ENDDO
61	DO I=1-Olx,sNx+Olx
62	OBNu(I,K,bi,bj)=Uinflow
63	OBNv(I,K,bi,bj)=0.
64	OBNt(I,K,bi,bj)=tRef(K)
65	OBSu(I,K,bi,bj)=Uinflow
66	OBSv(I,K,bi,bj)=0.
67	OBSt(I,K,bi,bj)=tRef(K)
68	ENDDO
69	ENDDO
70	ENDDO
71	ENDDO
72
73	#ifdef SIMPLE_OBCS
74	C This is an example of some rudimentary OBCs.
75	C These work but aren't very sophisticated...
76	C (The above specified OBCs produce nicer results!)
77	C [Remove the CPP #ifdef and #endif to use this code]
78
79	C Simple upwind-type radiation OBCs
80	DO bj = myByLo(myThid), myByHi(myThid)
81	DO bi = myBxLo(myThid), myBxHi(myThid)
82
83	DO K=1,Nr
84	DO J=1-Oly,sNy+Oly
85	C Eastern boundary
86	IF (uVel( OB_Ie(J,bi,bj) ,J,K,bi,bj).LE.0.) THEN
87	C Incoming flow or forced in-flow
88	OBEu(J,K,bi,bj)=Uinflow
89	OBEt(J,K,bi,bj)=tRef(K)
90	ELSE
91	C Outgoing flow
92	OBEu(J,K,bi,bj)=uVel( OB_Ie(J,bi,bj)-1 ,J,K,bi,bj)
93	OBEt(J,K,bi,bj)=theta( OB_Ie(J,bi,bj)-1 ,J,K,bi,bj)
94	ENDIF
95	OBEv(J,K,bi,bj)=0.
96	C Western boundary
97	IF (uVel( OB_Iw(J,bi,bj)+1 ,J,K,bi,bj).GE.0.) THEN
98	C Incoming flow or forced in-flow
99	OBWu(J,K,bi,bj)=Uinflow
100	OBWt(J,K,bi,bj)=tRef(K)
101	ELSE
102	C Outgoing flow
103	OBEu(J,K,bi,bj)=uVel( OB_Iw(J,bi,bj)+1 ,J,K,bi,bj)
104	OBEt(J,K,bi,bj)=theta( OB_Iw(J,bi,bj)+1 ,J,K,bi,bj)
105	ENDIF
106	OBWv(J,K,bi,bj)=0.
107	ENDDO
108	ENDDO
109
110	DO K=1,Nr
111	DO I=1-Olx,sNx+Olx
112	C Northern boundary
113	IF (vVel(I, OB_Jn(I,bi,bj) ,K,bi,bj).LE.0.) THEN
114	C Incoming flow or forced in-flow
115	OBNv(I,K,bi,bj)=0.
116	OBNt(I,K,bi,bj)=tRef(K)
117	ELSE
118	C Outgoing
119	OBNv(I,K,bi,bj)=vVel(I, OB_Jn(I,bi,bj)-1 ,K,bi,bj)
120	OBNt(I,K,bi,bj)=theta(I, OB_Jn(I,bi,bj)-1 ,K,bi,bj)
121	ENDIF
122	OBNu(I,K,bi,bj)=Uinflow
123	C Southern boundary
124	IF (vVel(I, OB_Js(I,bi,bj)+1 ,K,bi,bj).GE.0.) THEN
125	C Incoming flow or forced in-flow
126	OBSv(I,K,bi,bj)=0.
127	OBSt(I,K,bi,bj)=tRef(K)
128	ELSE
129	C Outgoing
130	OBSv(I,K,bi,bj)=vVel(I, OB_Js(I,bi,bj)+1 ,K,bi,bj)
131	OBSt(I,K,bi,bj)=theta(I, OB_Js(I,bi,bj)+1 ,K,bi,bj)
132	ENDIF
133	OBSu(I,K,bi,bj)=Uinflow
134	ENDDO
135	ENDDO
136
137	ENDDO
138	ENDDO
139	#endif
140
141
142	C
143	RETURN
144	END