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



  gr x 11 11 y 1 15
  gr y 6 6 x 1 5; gr x 6 6 y 6 20
  gr y 21 21 x 6 15; gr x 16 16 y 6 20
  gr x 1 1 y 11 25;gr ou y 1 1 x 1 20
  gr y 26 26 x 1 20;gr x 21 21 y 1 25
  msg        labyrinth geometry
  msg Press Enter to continue
  pause;red
  CON DIST Z 1 fil;.003
  msg               Distance from the nearest wall
  gr x 11 11 y 1 15 col 7
  gr y 6 6 x 1 5 col 7; gr x 6 6 y 6 20 col 7
  gr y 21 21 x 6 15 col 7; gr x 16 16 y 6 20 col 7
  gr x 1 1 y 11 25 col 7;gr ou y 1 1 x 1 20 col 7
  gr y 26 26 x 1 20 col 7;gr x 21 21 y 1 25 col 7
  ENDUSE
  DISPLAY
   This case illustrates how to use PLANT to introduce the new wall
   distance calculator for the  labyrinth  geometry.  The  solution
   procedure  deduces  DIST  (the required quantity) by solving
   div grad L = -1 , with L fixed to zero in solid walls.
  ENDDIS
     PLANTBEGIN
   DLDX=(EAST(LTSL)-WEST(LTSL))/(2.*DXG2D)
   REGION(7,9,6,15,1,1)
   DLDX=(EAST(LTSL)-WEST(LTSL))/(2.*DXG2D)
   REGION(7,14,16,20,1,1)
   DLDX=(EAST(LTSL)-WEST(LTSL))/(2.*DXG2D)
   REGION(12,14,6,15,1,1)
   DLDX=(EAST(LTSL)-LTSL)/DXG2D
   REGION(6,6,6,20,1,1)
   DLDX=(LTSL-WEST(LTSL))/DXG2D
   REGION(10,10,6,15,1,1)
   DLDX=(EAST(LTSL)-LTSL)/DXG2D
   REGION(11,11,6,15,1,1)
   DLDX=(LTSL-WEST(LTSL))/DXG2D
   REGION(15,15,6,20,1,1)
   DLDX=(EAST(LTSL)-WEST(LTSL))/(2.*DXG2D)
   REGION(2,9,1,5,1,1)
   DLDX=(EAST(LTSL)-WEST(LTSL))/(2.*DXG2D)
   REGION(12,19,1,5,1,1)

   DLDX=(EAST(LTSL)-LTSL)/DXG2D
   REGION(1,1,1,5,1,1)
   DLDX=(LTSL-WEST(LTSL))/DXG2D
   REGION(10,10,1,5,1,1)
   DLDX=(EAST(LTSL)-LTSL)/DXG2D
   REGION(11,11,1,5,1,1)
   DLDX=(LTSL-WEST(LTSL))/DXG2D
   REGION(20,20,1,5,1,1)

   DLDX=(EAST(LTSL)-WEST(LTSL))/(2.*DXG2D)
   REGION(2,4,6,20,1,1)
   DLDX=(EAST(LTSL)-WEST(LTSL))/(2.*DXG2D)
   REGION(17,19,6,20,1,1)
   DLDX=(EAST(LTSL)-LTSL)/DXG2D
   REGION(1,1,6,20,1,1)
   DLDX=(LTSL-WEST(LTSL))/DXG2D
   REGION(5,5,6,20,1,1)
   DLDX=(EAST(LTSL)-LTSL)/DXG2D
   REGION(16,16,6,20,1,1)
   DLDX=(LTSL-WEST(LTSL))/DXG2D
   REGION(20,20,6,20,1,1)

   DLDX=(EAST(LTSL)-WEST(LTSL))/(2.*DXG2D)
   REGION(2,19,21,25,1,1)
   DLDX=(EAST(LTSL)-LTSL)/DXG2D
   REGION(1,1,21,25,1,1)
   DLDX=(LTSL-WEST(LTSL))/DXG2D
   REGION(20,20,21,25,1,1)

   DLDY=(NORTH(LTSL)-SOUTH(LTSL))/(2.*DYG2D)
   REGION(6,15,2,19,1,1)
   DLDY=(NORTH(LTSL)-LTSL)/DYG2D
   REGION(6,15,1,1,1,1)
   DLDY=(LTSL-SOUTH(LTSL))/DYG2D
   REGION(6,15,20,20,1,1)
   DLDY=(NORTH(LTSL)-SOUTH(LTSL))/(2.*DYG2D)
   REGION(1,5,2,24,1,1)
   DLDY=(NORTH(LTSL)-SOUTH(LTSL))/(2.*DYG2D)
   REGION(16,20,2,24,1,1)
   DLDY=(NORTH(LTSL)-LTSL)/DYG2D
   REGION(1,5,1,1,1,1)
   DLDY=(LTSL-SOUTH(LTSL))/DYG2D
   REGION(1,5,25,25,1,1)
   DLDY=(NORTH(LTSL)-LTSL)/DYG2D
   REGION(16,20,1,1,1,1)
   DLDY=(LTSL-SOUTH(LTSL))/DYG2D
   REGION(16,20,25,25,1,1)
   DLDY=(NORTH(LTSL)-SOUTH(LTSL))/(2.*DYG2D)
   REGION(6,15,22,24,1,1)
   DLDY=(NORTH(LTSL)-LTSL)/DYG2D
   REGION(6,15,21,21,1,1)
   DLDY=(LTSL-SOUTH(LTSL))/DYG2D
   REGION(6,15,25,25,1,1)

   DIST=SQRT(DLDX**2+DLDY**2+2.*LTSL)-   SQRT((DLDX**2+DLDY$
**2))
   REGION(1,20,1,25,1,1)
    PLANTEND
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(WALL DISTANCE CALCULATOR:147            )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 147
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 20
 XULAST =1.
 XFRAC(1)=0.05 ;XFRAC(2)=0.1
 XFRAC(3)=0.15 ;XFRAC(4)=0.2
 XFRAC(5)=0.25 ;XFRAC(6)=0.3
 XFRAC(7)=0.35 ;XFRAC(8)=0.4
 XFRAC(9)=0.45 ;XFRAC(10)=0.5
 XFRAC(11)=0.55 ;XFRAC(12)=0.6
 XFRAC(13)=0.65 ;XFRAC(14)=0.7
 XFRAC(15)=0.75 ;XFRAC(16)=0.8
 XFRAC(17)=0.85 ;XFRAC(18)=0.9
 XFRAC(19)=0.95 ;XFRAC(20)=1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 25
 YVLAST =1.
 YFRAC(1)=0.04 ;YFRAC(2)=0.08
 YFRAC(3)=0.12 ;YFRAC(4)=0.16
 YFRAC(5)=0.2 ;YFRAC(6)=0.24
 YFRAC(7)=0.28 ;YFRAC(8)=0.32
 YFRAC(9)=0.36 ;YFRAC(10)=0.4
 YFRAC(11)=0.44 ;YFRAC(12)=0.48
 YFRAC(13)=0.52 ;YFRAC(14)=0.56
 YFRAC(15)=0.6 ;YFRAC(16)=0.64
 YFRAC(17)=0.68 ;YFRAC(18)=0.72
 YFRAC(19)=0.76 ;YFRAC(20)=0.8
 YFRAC(21)=0.84 ;YFRAC(22)=0.88
 YFRAC(23)=0.92 ;YFRAC(24)=0.96
 YFRAC(25)=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(145)=DIST ;NAME(146)=DLDY
 NAME(147)=DLDX ;NAME(148)=EPOR
 NAME(149)=NPOR ;NAME(150)=LTSL
    * Y in SOLUTN argument list denotes:
    * 1-stored 2-solved 3-whole-field
    * 4-point-by-point 5-explicit 6-harmonic averaging 
 SOLUTN(DIST,Y,N,N,N,N,Y)
 SOLUTN(DLDY,Y,N,N,N,N,Y)
 SOLUTN(DLDX,Y,N,N,N,N,Y)
 SOLUTN(EPOR,Y,N,N,N,N,N)
 SOLUTN(NPOR,Y,N,N,N,N,N)
 SOLUTN(LTSL,Y,Y,Y,N,N,N)
 EPOR = 148 ;HPOR = 0 ;NPOR = 149 ;VPOR = 0
 ************************************************************
  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(LTSL,N,N,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. ;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(LTSL)=1.
 PRT(LTSL)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(DIST)=1.0E-10 ;FIINIT(DLDY)=1.0E-10
 FIINIT(DLDX)=1.0E-10 ;FIINIT(EPOR)=1.
 FIINIT(NPOR)=1. ;FIINIT(LTSL)=1.0E-10
 
 PATCH(CMP0 ,INIVAL, 1, 5, 5, 5, 1, 1, 1, 1)
 INIT(CMP0 ,NPOR,0. ,0. )
 
 PATCH(CMP1 ,INIVAL, 5, 5, 6, 20, 1, 1, 1, 1)
 INIT(CMP1 ,EPOR,0. ,0. )
 
 PATCH(CMP2 ,INIVAL, 6, 15, 20, 20, 1, 1, 1, 1)
 INIT(CMP2 ,NPOR,0. ,0. )
 
 PATCH(CMP3 ,INIVAL, 15, 15, 6, 20, 1, 1, 1, 1)
 INIT(CMP3 ,EPOR,0. ,0. )
 
 PATCH(CMP4 ,INIVAL, 10, 10, 1, 15, 1, 1, 1, 1)
 INIT(CMP4 ,EPOR,0. ,0. )
 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(LEFT ,WWALL , 1, 1, 11, 25, 1, 1, 1, 1)
 COVAL(LEFT ,LTSL,1. ,0. )
 
 PATCH(TOP ,NWALL , 1, 20, 25, 25, 1, 1, 1, 1)
 COVAL(TOP ,LTSL,1. ,0. )
 
 PATCH(RIGHT ,EWALL , 20, 20, 1, 25, 1, 1, 1, 1)
 COVAL(RIGHT ,LTSL,1. ,0. )
 
 PATCH(FLOOR ,SWALL , 1, 20, 1, 1, 1, 1, 1, 1)
 COVAL(FLOOR ,LTSL,1. ,0. )
 
 PATCH(P1S ,SWALL , 1, 5, 6, 6, 1, 1, 1, 1)
 COVAL(P1S ,LTSL,1. ,0. )
 
 PATCH(P1N ,NWALL , 1, 5, 5, 5, 1, 1, 1, 1)
 COVAL(P1N ,LTSL,1. ,0. )
 
 PATCH(P2E ,EWALL , 5, 5, 6, 20, 1, 1, 1, 1)
 COVAL(P2E ,LTSL,1. ,0. )
 
 PATCH(P2W ,WWALL , 6, 6, 6, 20, 1, 1, 1, 1)
 COVAL(P2W ,LTSL,1. ,0. )
 
 PATCH(P3N ,NWALL , 6, 15, 20, 20, 1, 1, 1, 1)
 COVAL(P3N ,LTSL,1. ,0. )
 
 PATCH(P3S ,SWALL , 6, 15, 21, 21, 1, 1, 1, 1)
 COVAL(P3S ,LTSL,1. ,0. )
 
 PATCH(P4W ,WWALL , 16, 16, 6, 20, 1, 1, 1, 1)
 COVAL(P4W ,LTSL,1. ,0. )
 
 PATCH(P4E ,EWALL , 15, 15, 6, 20, 1, 1, 1, 1)
 COVAL(P4E ,LTSL,1. ,0. )
 
 PATCH(P5E ,EWALL , 10, 10, 1, 15, 1, 1, 1, 1)
 COVAL(P5E ,LTSL,1. ,0. )
 
 PATCH(P5W ,WWALL , 11, 11, 1, 15, 1, 1, 1, 1)
 COVAL(P5W ,LTSL,1. ,0. )
 
 PATCH(SORC ,VOLUME, 1, 20, 1, 25, 1, 1, 1, 1)
 COVAL(SORC ,LTSL, FIXFLU ,1. )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 15 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =1.0E-04
 ************************************************************
  Group 16. Terminate Iterations
 LITER(LTSL)=1
 ENDIT(LTSL)=1.0E-06
 ************************************************************
  Group 17. Relaxation
 RELAX(DIST,LINRLX,1.)
 RELAX(DLDY,LINRLX,1.)
 RELAX(DLDX,LINRLX,1.)
 RELAX(LTSL,FALSDT,1.0E+09)
 OVRRLX =0.
 EXPERT = F ;NNORSL = F
 ************************************************************
  Group 18. Limits
 VARMAX(DIST)=1.0E+10 ;VARMIN(DIST)=-1.0E+10
 VARMAX(DLDY)=1.0E+10 ;VARMIN(DLDY)=-1.0E+10
 VARMAX(DLDX)=1.0E+10 ;VARMIN(DLDX)=-1.0E+10
 VARMAX(EPOR)=1.0E+10 ;VARMIN(EPOR)=-1.0E+10
 VARMAX(NPOR)=1.0E+10 ;VARMIN(NPOR)=-1.0E+10
 VARMAX(LTSL)=1.0E+10 ;VARMIN(LTSL)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 NAMSAT =MOSG
 PARSOL = F
 ISG62 = 1
 ************************************************************
  Group 20. Preliminary Printout
 DISTIL = T ;NULLPR = F
 NDST = 0
 DSTTOL =1.0E-02
 EX(DIST)=0.06649 ;EX(DLDY)=0.02199
 EX(DLDX)=0.03455 ;EX(EPOR)=0.91
 EX(NPOR)=0.97 ;EX(LTSL)=5.424E-03
 ************************************************************
  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(DIST,Y,N,Y,N,N,N)
 OUTPUT(DLDY,Y,N,Y,N,N,N)
 OUTPUT(DLDX,Y,N,Y,N,N,N)
 OUTPUT(EPOR,Y,N,Y,N,N,N)
 OUTPUT(NPOR,Y,N,Y,N,N,N)
 OUTPUT(LTSL,Y,Y,Y,Y,Y,Y)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 10 ;IYMON = 10 ;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
 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