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(NATURAL CONVECTION BETWEEN FLAT PLATES:1)
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 129
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  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.
 RADIA =0. ;RADIB =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. )
 INIADD = F
 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(BOUSS ,PHASEM, 1, 1, 1, 20, 1, 20, 1, 1)
 COVAL(BOUSS ,W1 , FIXFLU , GRND )
 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
 NAMSAT =MOSG
 PARSOL = F
 ISG62 = 1
 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