TALK=T;RUN(1,1)
   PHOTON USE
   p;;;;

   up x; view z; Gr ou z 1
   msg temperature contours
   con tem1 z 1 fi;0.001; Pause;con off;red
   msg velocity vectors
   vec z 1 sh; pause

   ENDUSE
  DISPLAY
   The problem considered is the 2d thermal convection of air
   between isothermal horizontal walls in an enclosure of 5:1 aspect
   ratio with adiabatic side walls. The lower wall is at a higher
   temperature than the upper wall. This configuration frequently
   occurs in technology, for example, in energy storage systems and
   in many industrial heating and cooling systems. For Rayleigh
   numbers Ra less than the critical value of 1708, no motion
   occurs. For Ra in the range 1708 < Ra < 4E5, the fluid motion
   consists of regularly spaced roll cells, while for larger Ra,
   the cells break down and the motion is turbulent.

   PHOENICS simulations may be performed for laminar flow (the
   default) at a Rayleigh number Ra of 6.468E4 or turbulent flow at
   Ra=2.35E6. The Boussinesq approximation is used and the energy
   equation is solved with the temperature TEM1 as dependent
   variable. For turbulent flow, the low-Re k-e model of Lam and
   Bremhorst is used with buoyancy extensions and a turbulence
   buoyancy coefficient of C3e=1.44.
  ENDDIS
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(2D Rayleigh-Benard Convection           )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 297
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 28
 XULAST =1.
 XFRAC(1)=5.896926E-04 ;XFRAC(6)=5.810251E-03
 XFRAC(11)=0.016416 ;XFRAC(16)=0.03083
 XFRAC(21)=0.042543 ;XFRAC(26)=0.048698
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 42
 YVLAST =1.
 YFRAC(1)=1.902297E-03 ;YFRAC(9)=0.029051
 YFRAC(17)=0.086583 ;YFRAC(25)=0.163417
 YFRAC(33)=0.220949 ;YFRAC(41)=0.248098
 ************************************************************
  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(149)=PRPS
 NAME(150)=TEM1
    * 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(U1,Y,Y,N,N,N,Y)
 SOLUTN(V1,Y,Y,N,N,N,Y)
 SOLUTN(PRPS,Y,N,N,N,N,Y)
 SOLUTN(TEM1,Y,Y,N,N,N,Y)
 PRPS = 149
 ************************************************************
  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(TEM1,N,Y,Y,Y,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 =1.157136 ;TMP1 =0.
 EL1 =0.
 TSURR =0. ;TEMP0 =0.
 PRESS0 =0.
 DVO1DT =3.273322E-03 ;DRH1DP =0.
 EMISS =0. ;SCATT =0.
 RADIA =0. ;RADIB =0.
 ENUL =1.761505E-05 ;ENUT =0.
 PRNDTL(U1)=1. ;PRNDTL(V1)=1.
 PRNDTL(TEM1)=-0.026657
 PRT(U1)=1. ;PRT(V1)=1.
 PRT(TEM1)=0.9
 CP1 =1008. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(P1)=1.0E-10 ;FIINIT(U1)=1.0E-10
 FIINIT(V1)=1.0E-10 ;FIINIT(PRPS)=-1.
 FIINIT(TEM1)=305.5
   No PATCHes yet used for this Group
 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(HOT ,WWALL , 1, 1, 1, 42, 1, 1, 1, 1)
 COVAL(HOT ,V1 ,1. ,0. )
 COVAL(HOT ,TEM1, GRND2 ,308. )
 
 PATCH(COLD ,EWALL , 28, 28, 1, 42, 1, 1, 1, 1)
 COVAL(COLD ,V1 ,1. ,0. )
 COVAL(COLD ,TEM1, GRND2 ,303. )
 
 PATCH(TOPWAL ,NWALL , 1, 28, 42, 42, 1, 1, 1, 1)
 COVAL(TOPWAL ,U1 ,1. ,0. )
 
 PATCH(BOTWAL ,SWALL , 1, 28, 1, 1, 1, 1, 1, 1)
 COVAL(BOTWAL ,U1 ,1. ,0. )
 
 PATCH(BUOY ,PHASEM, 1, 28, 1, 42, 1, 1, 1, 1)
 COVAL(BUOY ,U1 , FIXFLU , GRND3 )
 
 PATCH(REFP ,CELL , 14, 14, 21, 21, 1, 1, 1, 1)
 COVAL(REFP ,P1 ,1. ,0. )
 COVAL(REFP ,V1 ,0. ,0. )
 COVAL(REFP ,TEM1,0. , SAME )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 BUOYA =-9.81 ; BUOYB =0.
 BUOYC =0.
 BUOYD =3.273322E-03
 BUOYE =305.5
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 800 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =1.0E-04
 ************************************************************
  Group 16. Terminate Iterations
 LITER(P1)=20 ;LITER(U1)=2
 LITER(V1)=2 ;LITER(TEM1)=50
 ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
 ENDIT(V1)=1.0E-03 ;ENDIT(TEM1)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(P1,LINRLX,1.)
 RELAX(U1,FALSDT,0.099651)
 RELAX(V1,FALSDT,0.099651)
 RELAX(PRPS,LINRLX,1.)
 RELAX(TEM1,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(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10
 VARMAX(TEM1)=308. ;VARMIN(TEM1)=303.
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 ISG62 = 1
 ************************************************************
  Group 20. Preliminary Printout
 DISTIL = T ;NULLPR = F
 NDST = 0
 DSTTOL =1.0E-02
 EX(P1)=3.703E-04 ;EX(U1)=6.746E-03
 EX(V1)=0.01186 ;EX(PRPS)=0.
 EX(TEM1)=305.299988
 ************************************************************
  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(PRPS,Y,N,Y,N,N,N)
 OUTPUT(TEM1,Y,N,Y,Y,Y,Y)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 5 ;IYMON = 21 ;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 = 5 ;IXPRF = 1 ;IXPRL = 10000
 NYPRIN = 8 ;IYPRF = 1 ;IYPRL = 10000
 IPLTF = 1 ;IPLTL = -1 ;NPLT = 50
 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