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



  msg             Numerical solution  contours
  con C1 Z M fi;0.001
  con C1 Y M fi;0.001
  con C1 X M fi;0.001
  gr ou x m;gr ou y m;gr ou z m
  msg Press Enter to continue
  PAUSE
  CLEAR
  con EXAC Z M fi;0.001
  con EXAC Y M fi;0.001
  con EXAC X M fi;0.001
  gr ou x m;gr ou y m;gr ou z m
  msg               Exact solution  contours
  msg Press e to END
  ENDUSE
  DISPLAY
    Three dimensional diffusion problem which can be tested against
    exact solution fields.
  ENDDIS
  PLANTBEGIN
PATCH(DIFWES,WWALL,1,1,1,NY,1,NZ,1,LSTEP)
   VAL=-YG2D**2-ZGNZ**2
COVAL(DIFWES,C1,1.,GRND)

PATCH(DIFNOR,NWALL,1,NX,NY,NY,1,NZ,1,LSTEP)
   VAL=2.*XG2D**2-1.-ZGNZ**2
COVAL(DIFNOR,C1,1.,GRND)

PATCH(DIFEAS,EWALL,NX,NX,1,NY,1,NZ,1,LSTEP)
   VAL=2.-YG2D**2-ZGNZ**2
COVAL(DIFEAS,C1,1.,GRND)

PATCH(DIFSOU,SWALL,1,NX,1,1,1,NZ,1,LSTEP)
   VAL=2.*XG2D**2-ZGNZ**2
COVAL(DIFSOU,C1,1.,GRND)

PATCH(DIFHIG,HWALL,1,NX,1,NY,NZ,NZ,1,LSTEP)
   VAL=2.*XG2D**2-YG2D**2-1.
COVAL(DIFHIG,C1,1.,GRND)

PATCH(DIFLOW,LWALL,1,NX,1,NY,1,1,1,LSTEP)
   VAL=2.*XG2D**2-YG2D**2
COVAL(DIFLOW,C1,1.,GRND)
  
STORE(EXAC)
   EXAC=2.*XG2D**2-YG2D**2-ZGNZ**2
  PLANTEND
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT( 3D DIFFUSION PROBLEM:118               )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 118
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 5
 XULAST =1.
 XFRAC(1)=0.2 ;XFRAC(2)=0.4
 XFRAC(3)=0.6 ;XFRAC(4)=0.8
 XFRAC(5)=1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 5
 YVLAST =1.
 YFRAC(1)=0.2 ;YFRAC(2)=0.4
 YFRAC(3)=0.6 ;YFRAC(4)=0.8
 YFRAC(5)=1.
 ************************************************************
  Group 5. Z-Direction Grid Spacing
 PARAB = F
 NZ = 5
 ZWLAST =1.
 ZFRAC(1)=0.2 ;ZFRAC(2)=0.4
 ZFRAC(3)=0.6 ;ZFRAC(4)=0.8
 ZFRAC(5)=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,Y,N,N,N)
 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,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.
 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)=1.0E-10 ;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(DIFWES ,WWALL , 1, 1, 1, 5, 1, 5, 1, 1)
 COVAL(DIFWES ,C1 ,1. , GRND )
 
 PATCH(DIFNOR ,NWALL , 1, 5, 5, 5, 1, 5, 1, 1)
 COVAL(DIFNOR ,C1 ,1. , GRND )
 
 PATCH(DIFEAS ,EWALL , 5, 5, 1, 5, 1, 5, 1, 1)
 COVAL(DIFEAS ,C1 ,1. , GRND )
 
 PATCH(DIFSOU ,SWALL , 1, 5, 1, 1, 1, 5, 1, 1)
 COVAL(DIFSOU ,C1 ,1. , GRND )
 
 PATCH(DIFHIG ,HWALL , 1, 5, 1, 5, 5, 5, 1, 1)
 COVAL(DIFHIG ,C1 ,1. , GRND )
 
 PATCH(DIFLOW ,LWALL , 1, 5, 1, 5, 1, 1, 1, 1)
 COVAL(DIFLOW ,C1 ,1. , GRND )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 3 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =1.0E-05
 ************************************************************
  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
 NAMSAT =MOSG
 PARSOL = F
 ISG62 = 1
 SPEDAT(SET,GXMONI,PLOTALL,L,T)
 ************************************************************
  Group 20. Preliminary Printout
 DISTIL = T ;NULLPR = F
 NDST = 0
 DSTTOL =1.0E-02
 EX(C1)=0.5782 ;EX(EXAC)=0.5786
 ************************************************************
  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
 NXPRIN = -1 ;IXPRF = 1 ;IXPRL = 10000
 NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10000
 NZPRIN = -1 ;IZPRF = 1 ;IZPRL = 10000
 XZPR = F ;YZPR = F
 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