```
TALK=T;RUN(1,1)
photon use
p

gr z 1
msg velocity vectors
vec z 1 sh
pause
msg pressure contours
con p1 z 1 fi;0.001
pause
con off
red
msg temperature contours
con temp z 1 fi;0.001
vec z 1
msg
msg Press e to END
enduse
DISPLAY

This case tests the "link" procedure in the x-y plane.
The geometry and boundary conditions are as shown:

----------------------------------
|                |               |
| outflow        |link           |
<--------            Isection        I
I                I               I
I   barrier      I   open        I
I--------------------------------I
I                I               I
I inflow         I               I
------->            I               I
I                I               I
I                I               I
I----------------I---------------I

ENDDIS
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************

TEXT(East-West Link Test In X-Y Plane        )

************************************************************
************************************************************

IRUNN = 1 ;LIBREF = 14
************************************************************
Group 2. Time dependence
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 12
XULAST =1.
Method of pairs used for grid setting.
XFRAC(1)=-5. ;XFRAC(2)=0.1
XFRAC(3)=2. ;XFRAC(4)=1.0E-03
XFRAC(5)=5. ;XFRAC(6)=0.1
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 10
YVLAST =1.
YFRAC(1)=0.1 ;YFRAC(2)=0.2
YFRAC(3)=0.3 ;YFRAC(4)=0.4
YFRAC(5)=0.5 ;YFRAC(6)=0.6
YFRAC(7)=0.7 ;YFRAC(8)=0.8
YFRAC(9)=0.9 ;YFRAC(10)=1.
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = F
NZ = 1
ZWLAST =1.
ZFRAC(1)=1.
************************************************************
Group 6. Body-Fitted Coordinates
************************************************************
Group 7. Variables: STOREd,SOLVEd,NAMEd
ONEPHS = T
NAME(1)=P1 ;NAME(3)=U1
NAME(5)=V1 ;NAME(14)=TEMP
* Y in SOLUTN argument list denotes:
* 1-stored 2-solved 3-whole-field
* 4-point-by-point 5-explicit 6-harmonic averaging
SOLUTN(P1,Y,Y,Y,N,N,N)
SOLUTN(U1,Y,Y,N,N,N,Y)
SOLUTN(V1,Y,Y,N,N,N,Y)
SOLUTN(TEMP,Y,Y,Y,N,N,N)
************************************************************
Group 8. Terms & Devices
* Y in TERMS argument list denotes:
* 1-built-in source 2-convection 3-diffusion 4-transient
* 5-first phase variable 6-interphase transport
TERMS(P1,Y,Y,Y,N,Y,Y)
TERMS(U1,Y,Y,Y,Y,Y,Y)
TERMS(V1,Y,Y,Y,Y,Y,Y)
TERMS(TEMP,N,N,Y,N,Y,Y)
DIFCUT =0.5 ;ZDIFAC =1.
GALA = F ;ADDDIF = F
ISOLX = 1 ;ISOLY = 1 ;ISOLZ = 1
************************************************************
Group 9. Properties used if PRPS is not
stored, and where PRPS = -1.0 if it is!
RHO1 =1. ;TMP1 =0.
EL1 =0.
TSURR =0. ;TEMP0 =0.
PRESS0 =0.
DVO1DT =0. ;DRH1DP =0.
EMISS =0. ;SCATT =0.
ENUL =1.0E-03 ;ENUT =0.
PRNDTL(U1)=1. ;PRNDTL(V1)=1.
PRNDTL(TEMP)=1.
PRT(U1)=1. ;PRT(V1)=1.
PRT(TEMP)=1.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=1.0E-10 ;FIINIT(U1)=1.
FIINIT(V1)=1.0E-10 ;FIINIT(TEMP)=1.0E-10

PATCH(INIT ,INIVAL, 1, 12, 6, 10, 1, 1, 1, 1)
INIT(INIT ,U1 ,0. ,-1. )
FSWEEP = 1
NAMFI =CHAM
************************************************************
Group 12. Patchwise adjustment of terms
Patches for this group are printed with those
for Group 13.
Their names begin either with GP12 or &
************************************************************
Group 13. Boundary & Special Sources

PATCH(COLD ,WEST , 1, 1, 1, 5, 1, 1, 1, 1)
COVAL(COLD ,P1 , FIXFLU ,1. )
COVAL(COLD ,U1 ,0. ,1. )
COVAL(COLD ,TEMP, FIXVAL ,-0.9 )

PATCH(HOT ,CELL , 1, 1, 6, 10, 1, 1, 1, 1)
COVAL(HOT ,P1 ,1.0E-02 ,0. )
COVAL(HOT ,TEMP, FIXVAL ,0.9 )

PATCH(+1 ,EAST , 6, 6, 1, 10, 1, 1, 1, 1)
COVAL(+1 ,P1 , FIXVAL ,20. )
COVAL(+1 ,U1 , FIXVAL ,20. )
COVAL(+1 ,V1 , FIXVAL ,20. )
COVAL(+1 ,TEMP, FIXVAL ,20. )

PATCH(+2 ,WEST , 7, 7, 1, 10, 1, 1, 1, 1)
COVAL(+2 ,P1 , FIXVAL ,-20. )
COVAL(+2 ,V1 , FIXVAL ,-20. )
COVAL(+2 ,TEMP, FIXVAL ,-20. )

PATCH(GP12DFE1,EAST , 5, 5, 1, 10, 1, 1, 1, 1)
COVAL(GP12DFE1,TEMP,0.5 ,0. )

PATCH(GP12DFE2,EAST , 7, 7, 1, 10, 1, 1, 1, 1)
COVAL(GP12DFE2,TEMP,0.5 ,0. )

PATCH(FENCE ,NORTH , 1, 6, 5, 5, 1, 1, 1, 1)
COVAL(FENCE ,V1 , FIXVAL ,0. )

PATCH(GP12DFN1,NORTH , 1, 5, 5, 5, 1, 1, 1, 1)
COVAL(GP12DFN1,TEMP,0. ,0. )
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 200 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-05
************************************************************
Group 16. Terminate Iterations
LITER(P1)=20 ;LITER(U1)=10
LITER(V1)=10 ;LITER(TEMP)=10
ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
ENDIT(V1)=1.0E-03 ;ENDIT(TEMP)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,0.5)
RELAX(U1,FALSDT,1.0E-02)
RELAX(V1,FALSDT,1.0E-02)
RELAX(TEMP,FALSDT,1.0E+09)
OVRRLX =0.
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
VARMAX(P1)=1.0E+10 ;VARMIN(P1)=-1.0E+10
VARMAX(U1)=1.0E+06 ;VARMIN(U1)=-1.0E+06
VARMAX(V1)=1.0E+06 ;VARMIN(V1)=-1.0E+06
VARMAX(TEMP)=1.0E+10 ;VARMIN(TEMP)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
CONWIZ = T
ISG62 = 1
************************************************************
Group 20. Preliminary Printout
************************************************************
Group 21. Print-out of Variables
INIFLD = F ;SUBWGR = F
* Y in OUTPUT argument list denotes:
* 1-field 2-correction-eq. monitor 3-selective dumping
* 4-whole-field residual 5-spot-value table 6-residual table
OUTPUT(P1,Y,N,Y,Y,Y,Y)
OUTPUT(U1,Y,N,Y,Y,Y,Y)
OUTPUT(V1,Y,N,Y,Y,Y,Y)
OUTPUT(TEMP,Y,Y,Y,Y,Y,Y)
************************************************************
Group 22. Monitor Print-Out
IXMON = 11 ;IYMON = 6 ;IZMON = 1
NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NXPRIN = -1 ;IXPRF = 5 ;IXPRL = 9
NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10000
IPLTF = 1 ;IPLTL = -1 ;NPLT = 1
ISWPRF = 1 ;ISWPRL = 100000
ITABL = 1 ;IPROF = 1
ABSIZ =0.5 ;ORSIZ =0.4
NTZPRF = 1 ;NCOLPF = 50
ICHR = 2 ;NCOLCO = 45 ;NROWCO = 20
No PATCHes yet used for this Group
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
STOP
```