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



  msg             Numerical solution  contours
  msg                     Time=1.
  con C1 Z 1 fi;0.001
  msg Press Enter to continue
  PAUSE
  CLEAR
  con EXAC Z 1 fi;0.001
  msg               Exact solution  contours
  msg                      Time=1.
  msg Press e to END
  ENDUSE
  DISPLAY
    PLANT sets up and solves a 2D unsteady diffusion problem with
    time-dependent source and boundary conditions and compares the
    results with the exact solution.

    The single dependent variable is C1

    The "PLANTed" formulae are:
  * at the west wall the value   = TIM*YG2D**2
  * at the east wall the value   = TIM*(1.0+YG2D**2)
  * at the south wall the value  = TIM*XG2D**2
  * at the north wall the value  = TIM*(1.0+XG2D**2)
  * within the volume the source = XG2D**2+YG2D**2-4.*TIM

  * the exact solution           = TIM*(XG2D**2+YG2D**2)
  ENDDIS
  PLANTBEGIN
PATCH(WEST,WWALL,1,1,1,NY,1,NZ,1,LSTEP)
   VAL=TIM*YG2D**2
COVAL(WEST,C1,1.,GRND)
PATCH(EAST,EWALL,NX,NX,1,NY,1,NZ,1,LSTEP)
   VAL=TIM*(1.0+YG2D**2)
COVAL(EAST,C1,1.,GRND)
PATCH(SOUTH,SWALL,1,NX,1,1,1,NZ,1,LSTEP)
   VAL=TIM*XG2D**2
COVAL(SOUTH,C1,1.,GRND)
PATCH(NORTH,NWALL,1,NX,NY,NY,1,NZ,1,LSTEP)
   VAL=TIM*(1.0+XG2D**2)
COVAL(NORTH,C1,1.,GRND)
PATCH(SOURC,VOLUME,1,NX,1,NY,1,NZ,1,LSTEP)
   VAL=XG2D**2+YG2D**2-4.*TIM
COVAL(SOURC,C1,FIXFLU,GRND)
STORE(EXAC)
   EXAC=TIM*(XG2D**2+YG2D**2)
   PLANTEND
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(In-Form equivalent of PLANT case Z119   )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 119
 ************************************************************
  Group 2. Time dependence
 STEADY = F
    * Set overall time and no. of steps
 TFIRST =0. ;TLAST =1.
 FSTEP = 1 ;LSTEP = 20
 TFRAC(1)=0.05 ;TFRAC(2)=0.1
 TFRAC(3)=0.15 ;TFRAC(4)=0.2
 TFRAC(5)=0.25 ;TFRAC(6)=0.3
 TFRAC(7)=0.35 ;TFRAC(8)=0.4
 TFRAC(9)=0.45 ;TFRAC(10)=0.5
 TFRAC(11)=0.55 ;TFRAC(12)=0.6
 TFRAC(13)=0.65 ;TFRAC(14)=0.7
 TFRAC(15)=0.75 ;TFRAC(16)=0.8
 TFRAC(17)=0.85 ;TFRAC(18)=0.9
 TFRAC(19)=0.95 ;TFRAC(20)=1.
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 50
 XULAST =1.
 XFRAC(1)=0.02 ;XFRAC(2)=0.04
 XFRAC(3)=0.06 ;XFRAC(4)=0.08
 XFRAC(5)=0.1 ;XFRAC(6)=0.12
 XFRAC(7)=0.14 ;XFRAC(8)=0.16
 XFRAC(9)=0.18 ;XFRAC(10)=0.2
 XFRAC(11)=0.22 ;XFRAC(12)=0.24
 XFRAC(13)=0.26 ;XFRAC(14)=0.28
 XFRAC(15)=0.3 ;XFRAC(16)=0.32
 XFRAC(17)=0.34 ;XFRAC(18)=0.36
 XFRAC(19)=0.38 ;XFRAC(20)=0.4
 XFRAC(21)=0.42 ;XFRAC(22)=0.44
 XFRAC(23)=0.46 ;XFRAC(24)=0.48
 XFRAC(25)=0.5 ;XFRAC(26)=0.52
 XFRAC(27)=0.54 ;XFRAC(28)=0.56
 XFRAC(29)=0.58 ;XFRAC(30)=0.6
 XFRAC(31)=0.62 ;XFRAC(32)=0.64
 XFRAC(33)=0.66 ;XFRAC(34)=0.68
 XFRAC(35)=0.7 ;XFRAC(36)=0.72
 XFRAC(37)=0.74 ;XFRAC(38)=0.76
 XFRAC(39)=0.78 ;XFRAC(40)=0.8
 XFRAC(41)=0.82 ;XFRAC(42)=0.84
 XFRAC(43)=0.86 ;XFRAC(44)=0.88
 XFRAC(45)=0.9 ;XFRAC(46)=0.92
 XFRAC(47)=0.94 ;XFRAC(48)=0.96
 XFRAC(49)=0.98 ;XFRAC(50)=1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 50
 YVLAST =1.
 YFRAC(1)=0.02 ;YFRAC(2)=0.04
 YFRAC(3)=0.06 ;YFRAC(4)=0.08
 YFRAC(5)=0.1 ;YFRAC(6)=0.12
 YFRAC(7)=0.14 ;YFRAC(8)=0.16
 YFRAC(9)=0.18 ;YFRAC(10)=0.2
 YFRAC(11)=0.22 ;YFRAC(12)=0.24
 YFRAC(13)=0.26 ;YFRAC(14)=0.28
 YFRAC(15)=0.3 ;YFRAC(16)=0.32
 YFRAC(17)=0.34 ;YFRAC(18)=0.36
 YFRAC(19)=0.38 ;YFRAC(20)=0.4
 YFRAC(21)=0.42 ;YFRAC(22)=0.44
 YFRAC(23)=0.46 ;YFRAC(24)=0.48
 YFRAC(25)=0.5 ;YFRAC(26)=0.52
 YFRAC(27)=0.54 ;YFRAC(28)=0.56
 YFRAC(29)=0.58 ;YFRAC(30)=0.6
 YFRAC(31)=0.62 ;YFRAC(32)=0.64
 YFRAC(33)=0.66 ;YFRAC(34)=0.68
 YFRAC(35)=0.7 ;YFRAC(36)=0.72
 YFRAC(37)=0.74 ;YFRAC(38)=0.76
 YFRAC(39)=0.78 ;YFRAC(40)=0.8
 YFRAC(41)=0.82 ;YFRAC(42)=0.84
 YFRAC(43)=0.86 ;YFRAC(44)=0.88
 YFRAC(45)=0.9 ;YFRAC(46)=0.92
 YFRAC(47)=0.94 ;YFRAC(48)=0.96
 YFRAC(49)=0.98 ;YFRAC(50)=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(16)=C1 ;NAME(150)=EXAC
    * Y in SOLUTN argument list denotes:
    * 1-stored 2-solved 3-whole-field
    * 4-point-by-point 5-explicit 6-harmonic averaging 
 SOLUTN(C1,Y,Y,N,N,N,Y)
 SOLUTN(EXAC,Y,N,N,N,N,Y)
 ************************************************************
  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(C1,N,N,Y,Y,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. ;TMP1 =0.
 EL1 =0.
 TSURR =0. ;TEMP0 =0.
 PRESS0 =0.
 DVO1DT =0. ;DRH1DP =0.
 EMISS =0. ;SCATT =0.
 RADIA =0. ;RADIB =0.
 ENUL =1. ;ENUT =0.
 PRNDTL(C1)=1.
 PRT(C1)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(C1)=0. ;FIINIT(EXAC)=1.0E-10
   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(WEST ,WWALL , 1, 1, 1, 10, 1, 1, 1, 5)
 COVAL(WEST ,C1 ,0. ,0. )
 
 PATCH(EAST ,EWALL , 10, 10, 1, 10, 1, 1, 1, 5)
 COVAL(EAST ,C1 ,0. ,0. )
 
 PATCH(SOUTH ,SWALL , 1, 10, 1, 1, 1, 1, 1, 5)
 COVAL(SOUTH ,C1 ,0. ,0. )
 
 PATCH(NORTH ,NWALL , 1, 10, 10, 10, 1, 1, 1, 5)
 COVAL(NORTH ,C1 ,0. ,0. )
 
 PATCH(IWEST ,WWALL , 1, 1, 1, 50, 1, 1, 1, 20)
 COVAL(IWEST ,C1 ,In-Form:source - see Grp 19)
 
 PATCH(IEAST ,EWALL , 50, 50, 1, 50, 1, 1, 1, 20)
 COVAL(IEAST ,C1 ,In-Form:source - see Grp 19)
 
 PATCH(ISOUTH ,SWALL , 1, 50, 1, 1, 1, 1, 1, 20)
 COVAL(ISOUTH ,C1 ,In-Form:source - see Grp 19)
 
 PATCH(INORTH ,NWALL , 1, 50, 50, 50, 1, 1, 1, 20)
 COVAL(INORTH ,C1 ,In-Form:source - see Grp 19)
 
 PATCH(ISOURC ,VOLUME, 1, 50, 1, 50, 1, 1, 1, 20)
 COVAL(ISOURC ,C1 ,In-Form:source - see Grp 19)
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 100 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =1.0E-04
 ************************************************************
  Group 16. Terminate Iterations
 LITER(C1)=20
 ENDIT(C1)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(C1,FALSDT,1.0E+09)
 RELAX(EXAC,LINRLX,1.)
 OVRRLX =0.
 EXPERT = F ;NNORSL = F
 ************************************************************
  Group 18. Limits
 VARMAX(C1)=1.0E+10 ;VARMIN(C1)=-1.0E+10
 VARMAX(EXAC)=1.0E+10 ;VARMIN(EXAC)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 ISG62 = 1
 SPEDAT(SET,GXMONI,TRANSIENT,L,F)
 SPEDAT(SET,SOURCE,C1!IWEST,C,=2.*(TIM*YG^2-C1)/DXG!LINE)
 SPEDAT(SET,SOURCE,C1!IEAST,C,=2.*(TIM*(1.0+YG^2)-C1)/DXG!LINE)
 SPEDAT(SET,SOURCE,C1!ISOUTH,C,=2.*(TIM*XG^2-C1)/DYG!LINE)
 SPEDAT(SET,SOURCE,C1!INORTH,C,=2.*(TIM*(1.0+XG^2)-C1)/DYG!LINE)
 SPEDAT(SET,SOURCE,C1!ISOURC,C,=XG^2+YG^2-4.*TIM)
 SPEDAT(SET,STORED,EXAC,C,=TIM*(XG^2+YG^2)!ZSLFIN)
 ************************************************************
  Group 20. Preliminary Printout
 DISTIL = T ;NULLPR = F
 NDST = 0
 DSTTOL =1.0E-02
 EX(C1)=0.6626 ;EX(EXAC)=0.665
 ************************************************************
  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(C1,Y,N,Y,Y,Y,Y)
 OUTPUT(EXAC,Y,N,Y,N,N,N)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 1 ;IYMON = 1 ;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
 NTPRIN = 100000 ;ISTPRF = 1 ;ISTPRL = 100000
 NXPRIN = -1 ;IXPRF = 1 ;IXPRL = 10000
 NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10000
 IPLTF = 1 ;IPLTL = -1 ;NPLT = -1
 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