TALK=T;RUN(1,1)
  DISPLAY

  This case illustrates the use of PIL to set up a "Couette flow",
  i.e. that which arises between extensive surfaces, separated by a
  constant distance, and sliding relative to one another.

  The flow is laminar, and the flow has uniform properties.

  Four equations are solved, namely for velocity, W1, and for three
  scalar quantities A, B and C which are distinguished only by
  having Prandtl Numbers of 1.0, 0.1 and 10.0 respectively.

  Each variable is given the value 0.0 at the lower (south) wall
  and the value 1.0 at the upper (north wall).

  The computed profiles are, of course, linear; and the only
  differences between the solutions for the four variables lie in
  the sources and sinks at the walls. These are largest in magnitude
  for C and smallest for B.
  ENDDIS
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(Couette Flow, Reynolds Number = 10.0    )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 951
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 1
 XULAST =1.
 XFRAC(1)=1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 20
 YVLAST =1.
 YFRAC(1)=0.05 ;YFRAC(2)=0.1
 YFRAC(3)=0.15 ;YFRAC(4)=0.2
 YFRAC(5)=0.25 ;YFRAC(6)=0.3
 YFRAC(7)=0.35 ;YFRAC(8)=0.4
 YFRAC(9)=0.45 ;YFRAC(10)=0.5
 YFRAC(11)=0.55 ;YFRAC(12)=0.6
 YFRAC(13)=0.65 ;YFRAC(14)=0.7
 YFRAC(15)=0.75 ;YFRAC(16)=0.8
 YFRAC(17)=0.85 ;YFRAC(18)=0.9
 YFRAC(19)=0.95 ;YFRAC(20)=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(7)=W1 ;NAME(148)=C
 NAME(149)=B ;NAME(150)=A
    * Y in SOLUTN argument list denotes:
    * 1-stored 2-solved 3-whole-field
    * 4-point-by-point 5-explicit 6-harmonic averaging 
 SOLUTN(W1,Y,Y,N,N,N,Y)
 SOLUTN(C,Y,Y,N,N,N,Y)
 SOLUTN(B,Y,Y,N,N,N,Y)
 SOLUTN(A,Y,Y,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(W1,N,N,Y,Y,Y,Y)
 TERMS(C,N,N,Y,Y,Y,Y)
 TERMS(B,N,N,Y,Y,Y,Y)
 TERMS(A,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 =0.1 ;ENUT =0.
 PRNDTL(W1)=1. ;PRNDTL(C)=10.
 PRNDTL(B)=0.1 ;PRNDTL(A)=1.
 PRT(W1)=1. ;PRT(C)=1.
 PRT(B)=1. ;PRT(A)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(W1)=1.0E-10 ;FIINIT(C)=1.0E-10
 FIINIT(B)=1.0E-10 ;FIINIT(A)=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(NORTH ,NWALL , 1, 1, 20, 20, 1, 1, 1, 1)
 COVAL(NORTH ,W1 ,1. ,1. )
 COVAL(NORTH ,C ,1. ,1. )
 COVAL(NORTH ,B ,1. ,1. )
 COVAL(NORTH ,A ,1. ,1. )
 
 PATCH(SOUTH ,SWALL , 1, 1, 1, 1, 1, 1, 1, 1)
 COVAL(SOUTH ,W1 ,1. ,0. )
 COVAL(SOUTH ,C ,1. ,0. )
 COVAL(SOUTH ,B ,1. ,0. )
 COVAL(SOUTH ,A ,1. ,0. )
 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(W1)=10 ;LITER(C)=20
 LITER(B)=20 ;LITER(A)=20
 ENDIT(W1)=1.0E-03 ;ENDIT(C)=1.0E-03
 ENDIT(B)=1.0E-03 ;ENDIT(A)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(W1,FALSDT,1.)
 RELAX(C,FALSDT,1.0E+09)
 RELAX(B,FALSDT,1.0E+09)
 RELAX(A,FALSDT,1.0E+09)
 OVRRLX =0.
 EXPERT = F ;NNORSL = F
 ************************************************************
  Group 18. Limits
 VARMAX(W1)=1.0E+06 ;VARMIN(W1)=-1.0E+06
 VARMAX(C)=1.0E+10 ;VARMIN(C)=-1.0E+10
 VARMAX(B)=1.0E+10 ;VARMIN(B)=-1.0E+10
 VARMAX(A)=1.0E+10 ;VARMIN(A)=-1.0E+10
 ************************************************************
  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(W1)=0.5 ;EX(C)=0.5
 EX(B)=0.5 ;EX(A)=0.5
 ************************************************************
  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(W1,Y,N,Y,Y,Y,Y)
 OUTPUT(C,Y,N,Y,Y,Y,Y)
 OUTPUT(B,Y,N,Y,Y,Y,Y)
 OUTPUT(A,Y,N,Y,Y,Y,Y)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 1 ;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
 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
 
 PATCH(PROFILES,PROFIL, 1, 1, 1, 20, 1, 1, 1, 1)
 PLOT(PROFILES,W1 ,0. ,1. )
 PLOT(PROFILES,C ,0. ,1. )
 PLOT(PROFILES,B ,0. ,1. )
 PLOT(PROFILES,A ,0. ,1. )
 ************************************************************
  Group 24. Dumps For Restarts
 SAVE = T ;NOWIPE = F
 NSAVE =CHAM
STOP