TALK=T;RUN(1,1)
  photon use
  ext



  view -1 1 1
  con temp x 1 fi;0.01
  con temp y m fi;0.01
  con temp z m fi;0.01
  gr x 1
  gr y m
  gr z m
  msg Press e to END
  enduse
  DISPLAY
                  /------/------/------/------/------/
                 /temperature fixed at 1.0 ----> X  /|
                /------/------/------/------/------/ /
               /      /      /      /      /      /|/|
              /------/------/------/------/------/ / /
             /      /      /      /      /      /|/|/|
            /------/------/------/------/------/ / / /
           /      /      /      /      /      /|/|/|/|
  north   |------|------|------|------|------| / / / /
    ^     |      |      |      |      |      |/|/|/|/|
    |     |------|------|------|------|------| / / / /  high
    |     |      |      |      |      |      |/|/|/|/    ^
    y     |------|------|------|------|------| / / /    /
    |     |      |      |      |      |      |/|/|/    z
    |     |------|------|------|------|------| / /    /
    |     |      |      |      |      |      |/|/    /
    |     |------|------|------|------|------| /    /
    |     |  X <-- temperature fixed at zero |/    /
  south   |------|------|------|------|------|   low
          /west----------------x----->east
    The following PHOTON "use" file enables the temperature
    distribution to be visualized.
    
    PHOTON USE
    ext;;;;

    view 5 2 -1
    msg a cube with fixed temperatures at opposite corners
    msg press enter
    gr x m; gr  y m; gr  z 1
    pause;gr off;gr ou x m;gr ou y m;gr ou z 1;red
    msg the temperature for z=1
    msg press enter
    con temp z 1 fi;0.01
    con temp z 1 ;int 40
    gr ou x m;gr ou y m;gr ou z 1;
    pause;red

    msg the temperature for y=ny
    msg press enter
    con temp y m fi;0.01
    con temp y m ;int 40
    gr ou x m;gr ou y m;gr ou z 1;
    pause;red
    msg the temperature for x=nx
    msg press enter
    con temp x m fi;0.01
    con temp x m ;int 40
    gr ou x m;gr ou y m;gr ou z 1;
    pause;red
    msg Press e to END, or ? for help
    enduse
  ENDDIS
  xprtbegin
  expsol    t
  ifrequ    2
  facinc    1.01
  facdec    0.9
  facinc    1.02
  facdec    0.6
  xprtend
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(Conduction In Cube; Expert              )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 100
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 10
 XULAST =1.
 XFRAC(1)=0.1 ;XFRAC(3)=0.3
 XFRAC(5)=0.5 ;XFRAC(7)=0.7
 XFRAC(9)=0.9
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 10
 YVLAST =1.
 YFRAC(1)=0.1 ;YFRAC(3)=0.3
 YFRAC(5)=0.5 ;YFRAC(7)=0.7
 YFRAC(9)=0.9
 ************************************************************
  Group 5. Z-Direction Grid Spacing
 PARAB = F
 NZ = 10
 ZWLAST =1.
 ZFRAC(1)=0.1 ;ZFRAC(3)=0.3
 ZFRAC(5)=0.5 ;ZFRAC(7)=0.7
 ZFRAC(9)=0.9
 ************************************************************
  Group 6. Body-Fitted Coordinates
 ************************************************************
  Group 7. Variables: STOREd,SOLVEd,NAMEd
 ONEPHS = T
 NAME(14)=TEMP ;NAME(150)=BLOK
    * Y in SOLUTN argument list denotes:
    * 1-stored 2-solved 3-whole-field
    * 4-point-by-point 5-explicit 6-harmonic averaging 
 SOLUTN(TEMP,Y,Y,Y,N,N,N)
 SOLUTN(BLOK,Y,N,N,N,N,Y)
 IVARBK = 14 ;ISOLBK = 0
 PRNITS= F ;OPTRLX= F ;NOSIP= F ;ALLVBC= F
 DBSOLV= F ;IMPINI= F ;EARL1D= F
 ************************************************************
  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(TEMP,N,N,Y,N,Y,Y)
 DIFCUT =0.5 ;ZDIFAC =1.
 GALA = F ;ADDDIF = F
 ISOLX = 0 ;ISOLY = 0 ;ISOLZ = 0
 ************************************************************
  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(TEMP)=1.
 PRT(TEMP)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(TEMP)=0. ;FIINIT(BLOK)=1.
 
 PATCH(BLOK2 ,INIVAL, 1, 5, 1, 5, 1, 5, 1, 1)
 INIT(BLOK2 ,BLOK,0. ,2. )
 
 PATCH(BLOK3 ,INIVAL, 6, 10, 1, 5, 1, 5, 1, 1)
 INIT(BLOK3 ,BLOK,0. ,3. )
 
 PATCH(BLOK4 ,INIVAL, 1, 5, 6, 10, 1, 5, 1, 1)
 INIT(BLOK4 ,BLOK,0. ,4. )
 
 PATCH(BLOK5 ,INIVAL, 6, 10, 6, 10, 1, 5, 1, 1)
 INIT(BLOK5 ,BLOK,0. ,5. )
 
 PATCH(BLOK6 ,INIVAL, 1, 5, 1, 5, 6, 10, 1, 1)
 INIT(BLOK6 ,BLOK,0. ,6. )
 
 PATCH(BLOK7 ,INIVAL, 6, 10, 1, 5, 6, 10, 1, 1)
 INIT(BLOK7 ,BLOK,0. ,7. )
 
 PATCH(BLOK8 ,INIVAL, 1, 5, 6, 10, 6, 10, 1, 1)
 INIT(BLOK8 ,BLOK,0. ,8. )
 
 PATCH(XDIR ,LINVLX, 1, 10, 1, 10, 1, 10, 1, 1)
 INIT(XDIR ,TEMP,1. ,1. )
 
 PATCH(YDIR ,LINVLY, 1, 10, 1, 10, 1, 10, 1, 1)
 INIT(YDIR ,TEMP,1. ,1. )
 
 PATCH(ZDIR ,LINVLZ, 1, 10, 1, 10, 1, 10, 1, 1)
 INIT(ZDIR ,TEMP,1. ,1. )
 
 PATCH(CENTRAL ,INIVAL, 6, 10, 6, 10, 6, 10, 1, 1)
 INIT(CENTRAL ,TEMP,0. ,10. )
 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(COLD ,CELL , 1, 1, 1, 1, 1, 1, 1, 1)
 COVAL(COLD ,TEMP,100. ,0. )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 1 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =0.1
 ************************************************************
  Group 16. Terminate Iterations
 LITER(TEMP)=-2000
 ENDIT(TEMP)=-1.5
 ************************************************************
  Group 17. Relaxation
 RELAX(TEMP,LINRLX,1.)
 RELAX(BLOK,LINRLX,1.)
 OVRRLX =1.7
 EXPERT = F ;NNORSL = F
 ************************************************************
  Group 18. Limits
 VARMAX(TEMP)=1.0E+10 ;VARMIN(TEMP)=-1.0E+10
 VARMAX(BLOK)=1.0E+10 ;VARMIN(BLOK)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 ISG62 = 1
 ************************************************************
  Group 20. Preliminary Printout
 ************************************************************
  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(TEMP,Y,N,N,N,N,N)
 OUTPUT(BLOK,Y,N,Y,N,N,N)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 6 ;IYMON = 6 ;IZMON = 6
 NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = 1
 UWATCH = T ;USTEER = T
 HIGHLO = F
 ************************************************************
  Group 23.Field Print-Out & Plot Control
 NPRINT = 100000 ;NUMCLS = 5
 NXPRIN = 2 ;IXPRF = 1 ;IXPRL = 10000
 NYPRIN = 2 ;IYPRF = 1 ;IYPRL = 10000
 NZPRIN = 2 ;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
 
 PATCH(YLINE ,PROFIL, 5, 5, 1, 10, 5, 5, 1, 1)
 PLOT(YLINE ,TEMP,0. ,0. )
 PLOT(YLINE ,BLOK,0. ,0. )
 
 PATCH(XPLANE ,CONTUR, 5, 5, 1, 10, 1, 10, 1, 1)
 PLOT(XPLANE ,TEMP,0. ,20. )
 PLOT(XPLANE ,BLOK,0. ,20. )
 ************************************************************
  Group 24. Dumps For Restarts
 SAVE = T ;NOWIPE = T
 NSAVE =CHAM
STOP