```
TALK=T;RUN(1,1)
PHOTON USE
P

rot z ang 180;rot x ang 90
gr ou x 1
gr ou x 1 y 1 4 z 7 12
set vec ref 0.1
vec x 1 sh
msg(            Velocity distribution
msg( Press ENTER to continue
pause;
vec off;red
con h1 x 1 fil;.0001
msg(             Temperature contours
msg( Press E to finish
ENDUSE
DISPLAY
This run  simulates  natural  convection  in  the gap
between a pair of parallel ,  vertically mounted flat
plates.  One  of them has block which emits a uniform
heat flux.  The external pressure is the same at both
top  and bottom of the plate so the flow is driven by
buoyancy alone.  PLANT is used  to  introduce  GROUND
codings for non-uniform buoyancy forces.
ENDDIS
PLANTBEGIN
**Boussinesq approximation for buoyancy force.
RG(1)=9.81;RG(2)=0.0
PATCH(BOUSS,PHASEM,1,1,1,NY,1,NZ,1,1)
VAL=-RG(1)*(RG(2)-H1)/300000
COVAL(BOUSS,W1,FIXFLU,GRND)
PLANTEND
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************

TEXT(In-Form equivalent of PLANT case Z129   )

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

IRUNN = 1 ;LIBREF = 729
************************************************************
Group 2. Time dependence
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 1
XULAST =1.
XFRAC(1)=1.
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 20
YVLAST =0.025
YFRAC(1)=0.05 ;YFRAC(2)=0.1
YFRAC(3)=0.15 ;YFRAC(4)=0.2
YFRAC(5)=0.25 ;YFRAC(6)=0.3
YFRAC(7)=0.35 ;YFRAC(8)=0.4
YFRAC(9)=0.45 ;YFRAC(10)=0.5
YFRAC(11)=0.55 ;YFRAC(12)=0.6
YFRAC(13)=0.65 ;YFRAC(14)=0.7
YFRAC(15)=0.75 ;YFRAC(16)=0.8
YFRAC(17)=0.85 ;YFRAC(18)=0.9
YFRAC(19)=0.95 ;YFRAC(20)=1.
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = F
NZ = 20
ZWLAST =0.05
ZFRAC(1)=0.05 ;ZFRAC(3)=0.15
ZFRAC(5)=0.25 ;ZFRAC(7)=0.35
ZFRAC(9)=0.45 ;ZFRAC(11)=0.55
ZFRAC(13)=0.65 ;ZFRAC(15)=0.75
ZFRAC(17)=0.85 ;ZFRAC(19)=0.95
************************************************************
Group 6. Body-Fitted Coordinates
************************************************************
Group 7. Variables: STOREd,SOLVEd,NAMEd
ONEPHS = T
NAME(1)=P1 ;NAME(5)=V1
NAME(7)=W1 ;NAME(14)=H1
NAME(150)=PRPS
* 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,N,N,N,Y)
SOLUTN(V1,Y,Y,N,N,N,Y)
SOLUTN(W1,Y,Y,N,N,N,Y)
SOLUTN(H1,Y,Y,N,N,N,Y)
SOLUTN(PRPS,Y,N,N,N,N,Y)
PRPS = 150
************************************************************
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(V1,Y,Y,Y,Y,Y,Y)
TERMS(W1,Y,Y,Y,Y,Y,Y)
TERMS(H1,N,Y,Y,N,Y,N)
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 =1.164 ;TMP1 =0.
EL1 =0.
TSURR =0. ;TEMP0 =0.
PRESS0 =0.
DVO1DT =0. ;DRH1DP =0.
EMISS =0. ;SCATT =0.
ENUL =1.65E-05 ;ENUT =0.
PRNDTL(V1)=1. ;PRNDTL(W1)=1.
PRNDTL(H1)=0.7
PRT(V1)=1. ;PRT(W1)=1.
PRT(H1)=1.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=1.0E-10 ;FIINIT(V1)=1.0E-10
FIINIT(W1)=0.2 ;FIINIT(H1)=1.0E-10
FIINIT(PRPS)=-1.

PATCH(PINIT ,LINVLZ, 1, 1, 1, 20, 1, 20, 1, 1)
INIT(PINIT ,P1 ,0.4656 ,-0.02328 )

PATCH(CMP1 ,INIVAL, 1, 1, 1, 4, 7, 12, 1, 1)
INIT(CMP1 ,PRPS,0. ,198. )
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(INLET ,LOW , 1, 1, 1, 20, 1, 1, 1, 1)
COVAL(INLET ,P1 ,-2.328 ,0. )
COVAL(INLET ,W1 ,0. , SAME )
COVAL(INLET ,H1 ,0. ,0. )

PATCH(HOTWALL ,SWALL , 1, 1, 1, 1, 1, 20, 1, 1)
COVAL(HOTWALL ,W1 ,1. ,0. )

PATCH(SIDWALL ,NWALL , 1, 1, 20, 20, 1, 20, 1, 1)
COVAL(SIDWALL ,W1 ,1. ,0. )

PATCH(HEAT ,SOUTH , 1, 1, 5, 5, 7, 12, 1, 1)
COVAL(HEAT ,H1 , FIXFLU ,1000. )

PATCH(EXIT ,HIGH , 1, 1, 1, 20, 20, 20, 1, 1)
COVAL(EXIT ,P1 ,1000. ,0. )
COVAL(EXIT ,W1 ,0. , SAME )
COVAL(EXIT ,H1 ,0. ,0. )

PATCH(IBOUSS ,PHASEM, 1, 1, 1, 20, 1, 20, 1, 1)
COVAL(IBOUSS ,W1 ,In-Form:source - see Grp 19)
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 400 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-04
************************************************************
Group 16. Terminate Iterations
LITER(P1)=20 ;LITER(V1)=2
LITER(W1)=2 ;LITER(H1)=2
ENDIT(P1)=1.0E-03 ;ENDIT(V1)=1.0E-03
ENDIT(W1)=1.0E-03 ;ENDIT(H1)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(V1,FALSDT,0.1)
RELAX(W1,FALSDT,0.1)
RELAX(H1,FALSDT,1.0E-02)
RELAX(PRPS,LINRLX,1.)
OVRRLX =0.
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
VARMAX(P1)=1.0E+10 ;VARMIN(P1)=-1.0E+10
VARMAX(V1)=1.0E+06 ;VARMIN(V1)=-1.0E+06
VARMAX(W1)=1.0E+06 ;VARMIN(W1)=-1.0E+06
VARMAX(H1)=1.0E+10 ;VARMIN(H1)=-1.0E+10
VARMAX(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
ISG62 = 1
SPEDAT(SET,SOURCE,W1!IBOUSS,C,=-9.81*(0-H1)/300000)
SPEDAT(SET,MATERIAL,198,L,T)
RG( 1) =9.81
************************************************************
Group 20. Preliminary Printout
DISTIL = T ;NULLPR = F
NDST = 0
DSTTOL =1.0E-02
EX(P1)=2.251E-04 ;EX(V1)=5.917E-03
EX(W1)=0.01908 ;EX(H1)=4053.
EX(PRPS)=12.82
************************************************************
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(V1,Y,N,Y,Y,Y,Y)
OUTPUT(W1,Y,N,Y,Y,Y,Y)
OUTPUT(H1,Y,N,Y,Y,Y,Y)
OUTPUT(PRPS,Y,N,Y,N,N,N)
************************************************************
Group 22. Monitor Print-Out
IXMON = 1 ;IYMON = 3 ;IZMON = 15
NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10000
NZPRIN = 2 ;IZPRF = 1 ;IZPRL = 10000
XZPR = F ;YZPR = F
IPLTF = 1 ;IPLTL = -1 ;NPLT = 2
ISWPRF = 1 ;ISWPRL = 100000
ITABL = 3 ;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
```