TALK=T;RUN(1,1)
  display
     This Q1 demonstrates the use of 5 operations used
     for the creation of BFC grids, namely:
     * defining points,
     * defining lines,
     * defining frames,
     * setting grid dimensions, and
     * matching a grid to a frame.

     Those operations are used here in order to:
     1. create a circle,
     2. dimension a grid,
     3. match the grid to the circle, and
     4. use the Laplace method to improve orthogonality.

     The relevant PIL commands will be displayed, then processed.
     The first sets the grid type to BFC

     The coordinates of the four points used for defining the
     circle will be taken as:
       A (0,1,1); B(0,2,1); C(0,2,2); D(0,1,2)
     The command to define point A is:
     The command to define point B is:
     The command to define point C is:
     The command to define point D is:
     The command to draw the arc L1 from A to B which goes through
     (0.5*(ya+yb) ,  is:
     The command to draw the arc L2 from B to C
     The command to draw the arc L3 from C to D
     The command to draw the arc L4 from A to D
     The command to define frame F1 which has corner points
     A,B,C,D is:
     The command to set the BFC grid dimension as 1x20x20 is:
     The command to match grid plane I1 on frame F1 using the
     trans-finite method is:
     Now the PIL command to copy to the I2 plane from the I1
     plane by shifting it through a distance (0.5,0,0) is:
     By this time, the BFC grid has already set, however,
     to make it as orthogonal as possible, a Laplace
     solver is used in the following operations-

     The PIL command to match grid plane I1 on frame F1 using
     the Laplace solver with 20 iterations is:
     Finally the PIL command to copy to the I2 plane from the I1
     plane by shifting it through a distance (0.5,0,0) is:
  enddis
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(GRID_ON_CIRCLE                     :B544)
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 1
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 1
 XULAST =1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 20
 YVLAST =1.
 ************************************************************
  Group 5. Z-Direction Grid Spacing
 PARAB = F
 NZ = 20
 ZWLAST =1.
 ************************************************************
  Group 6. Body-Fitted Coordinates
 BFC = T ;NONORT = F
 NCRT = -1
 RSTGEO = F ;SAVGEO = F
 UUP = F ;VUP = F ;WUP = F
 NGEOM =CHAM
 NAMXYZ =CHAM
 ANGMIN =20.
 DOMAIN(   1,   1,   1,  21,   1,  21)
    * Set fixed sub-domain
 FIXDOM(   1,   0,   0,   0,   0,   0,   0)
 FIXDOM(   2,   0,   0,   0,   0,   0,   0)
 FIXDOM(   3,   0,   0,   0,   0,   0,   0)
 FIXDOM(   4,   0,   0,   0,   0,   0,   0)
 FIXDOM(   5,   0,   0,   0,   0,   0,   0)
 FIXDOM(   6,   0,   0,   0,   0,   0,   0)
 FIXDOM(   7,   0,   0,   0,   0,   0,   0)
 FIXDOM(   8,   0,   0,   0,   0,   0,   0)
 FIXDOM(   9,   0,   0,   0,   0,   0,   0)
 FIXDOM(  10,   0,   0,   0,   0,   0,   0)
 MSWP = 20
 LIJ = F ;LJK = T ;LIK = F
 IMON = 1 ;JMON = 11 ;KMON = 11
 ************************************************************
  Group 7. Variables: STOREd,SOLVEd,NAMEd
 ONEPHS = T
    * Y in SOLUTN argument list denotes:
    * 1-stored 2-solved 3-whole-field
    * 4-point-by-point 5-explicit 6-harmonic averaging 
 ************************************************************
  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         
 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 =1.0E-05 ;ENUT =0.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
   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
   No PATCHes yet used for this Group
 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 =1.0E-04
 ************************************************************
  Group 16. Terminate Iterations
 ************************************************************
  Group 17. Relaxation
 OVRRLX =0.
 EXPERT = F ;NNORSL = F
 ************************************************************
  Group 18. Limits
 ************************************************************
  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
 ************************************************************
  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
 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