TALK=T;RUN(1,1)
  AUTOPLOT USE
  file
  p3 5
  p6
  p9
  p12

  da 1
  pt1

  da 2
  pt1

  da 3
  pt1

  da 4
  pt1
  screen
  msg volume fraction of gas along length of duct at t=45s
  blb1 1
  pl 1
  msg press  to continue
  pause
  screen
  msg volume fraction of gas along length of duct at t=90s
  blb1 2
  pl 2
  msg press  to continue
  pause
  screen
  msg volume fraction of gas along length of duct at t=135s
  blb1 3
  pl 3
  msg press  to continue
  pause
  screen
  msg volume fraction of gas along length of duct at t=180s
  blb1 4
  pl 4
  msg press e to END
  enduse
  DISPLAY
  1D TRANSIENT PHASE SEPARATION OF GAS & LIQUID
  1-dimensional (x), transient, elliptic simulation

  This case calculates the separation of gas and liquid which at
  the start of the calculation are uniformly mixed in a closed duct.
  Under the influence of gravity, the lighter phase (gas) starts to
  rise at a constant slip velocity which is assumed to be the
  terminal velocity. The liquid is consequently displaced downwards.

             +------------+
       ^     |    gas     |
       |     |     +      |
       |x    |   liquid   |
             +------------+
  enddis
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(Trans. phase separation of gas/liq:P112 )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 1
 ************************************************************
  Group 2. Time dependence
 STEADY = F
    * Set overall time and no. of steps
 TFIRST =0. ;TLAST =600.
 FSTEP = 1 ;LSTEP = 12
 TFRAC(1)=0.025 ;TFRAC(2)=0.05
 TFRAC(3)=0.075 ;TFRAC(4)=0.1
 TFRAC(5)=0.125 ;TFRAC(6)=0.15
 TFRAC(7)=0.175 ;TFRAC(8)=0.2
 TFRAC(9)=0.225 ;TFRAC(10)=0.25
 TFRAC(11)=0.275 ;TFRAC(12)=0.3
 TFRAC(13)=0.325 ;TFRAC(14)=0.35
 TFRAC(15)=0.375 ;TFRAC(16)=0.4
 TFRAC(17)=0.425 ;TFRAC(18)=0.45
 TFRAC(19)=0.475 ;TFRAC(20)=0.5
 TFRAC(21)=0.525 ;TFRAC(22)=0.55
 TFRAC(23)=0.575 ;TFRAC(24)=0.6
 TFRAC(25)=0.625 ;TFRAC(26)=0.65
 TFRAC(27)=0.675 ;TFRAC(28)=0.7
 TFRAC(29)=0.725 ;TFRAC(30)=0.75
 TFRAC(31)=0.775 ;TFRAC(32)=0.8
 TFRAC(33)=0.825 ;TFRAC(34)=0.85
 TFRAC(35)=0.875 ;TFRAC(36)=0.9
 TFRAC(37)=0.925 ;TFRAC(38)=0.95
 TFRAC(39)=0.975 ;TFRAC(40)=1.
 ************************************************************
  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 = 1
 YVLAST =1.
 YFRAC(1)=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(1)=P1 ;NAME(3)=U1
 NAME(16)=PT0 ;NAME(17)=PT1
 NAME(148)=VISL ;NAME(149)=DEN1
 NAME(150)=VFOL
    * Y in SOLUTN argument list denotes:
    * 1-stored 2-solved 3-whole-field
    * 4-point-by-point 5-explicit 6-harmonic averaging 
 SOLUTN(P1,Y,Y,N,N,N,Y)
 SOLUTN(U1,Y,Y,N,N,N,Y)
 SOLUTN(PT0,Y,Y,N,N,N,Y)
 SOLUTN(PT1,Y,Y,N,N,N,Y)
 SOLUTN(VISL,Y,N,N,N,N,Y)
 SOLUTN(DEN1,Y,N,N,N,N,Y)
 SOLUTN(VFOL,Y,Y,N,N,N,Y)
 DEN1 = 149
 VISL = 148
 ************************************************************
  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(P1,Y,Y,Y,N,Y,Y)
 TERMS(U1,Y,Y,Y,Y,Y,Y)
 TERMS(PT0,N,Y,Y,Y,Y,Y)
 TERMS(PT1,N,Y,Y,Y,N,Y)
 TERMS(VFOL,N,N,N,N,Y,Y)
 DIFCUT =0.5 ;ZDIFAC =1.
 GALA = T ;ADDDIF = F
 NEWRH1 = T
 ISOLX = -1 ;ISOLY = -1 ;ISOLZ = -1
 ************************************************************
  Group 9. Properties used if PRPS is not
  stored, and where PRPS = -1.0 if it is!
 RHO1 = GRND ;TMP1 =0.
 EL1 =0.
 TSURR =0. ;TEMP0 =0.
 PRESS0 =0.
 DVO1DT =0. ;DRH1DP =0.
 RHO1A =0. ;RHO1B =0.
 RHO1C =0.
 EMISS =0. ;SCATT =0.
 RADIA =0. ;RADIB =0.
 ENUL =1.0E-06 ;ENUT =0.
 CINT(PT0)=1. ;CINT(PT1)=1.0E-04
 CINT(VISL)=1. ;CINT(DEN1)=1.
 CINT(VFOL)=1.
 PHINT(PT0)=-2.022E+04 ;PHINT(PT1)=1.
 PHINT(VISL)=-2.022E+04 ;PHINT(DEN1)=-2.022E+04
 PHINT(VFOL)=-2.022E+04
 PRNDTL(U1)=1. ;PRNDTL(PT0)=1.0E-06
 PRNDTL(PT1)=1.
 PRT(U1)=1. ;PRT(PT0)=1.
 PRT(PT1)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(P1)=0. ;FIINIT(U1)=1.0E-10
 FIINIT(PT0)=0.5 ;FIINIT(PT1)=0.5
 FIINIT(VISL)=1.0E-10 ;FIINIT(DEN1)=1.0E-10
 FIINIT(VFOL)=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(REFP1 ,CELL , 20, 20, 1, 1, 1, 1, 1, 40)
 COVAL(REFP1 ,P1 ,1. ,0. )
 
 PATCH(BUOY ,PHASEM, 1, 20, 1, 1, 1, 1, 1, 40)
 COVAL(BUOY ,U1 , FIXFLU , GRND1 )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 BUOYA =-9.81 ; BUOYB =0.
 BUOYC =0.
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 25 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =1.0E-04
 ************************************************************
  Group 16. Terminate Iterations
 LITER(P1)=20 ;LITER(U1)=10
 LITER(PT0)=5 ;LITER(PT1)=10
 LITER(VFOL)=20
 ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
 ENDIT(PT0)=1.0E-06 ;ENDIT(PT1)=1.0E-08
 ENDIT(VFOL)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(P1,LINRLX,1.)
 RELAX(U1,FALSDT,10.)
 RELAX(PT0,LINRLX,0.5)
 RELAX(PT1,LINRLX,0.3)
 RELAX(VISL,LINRLX,1.)
 RELAX(DEN1,LINRLX,1.)
 RELAX(VFOL,FALSDT,1.0E+09)
 OVRRLX =0.
 EXPERT = F ;NNORSL = F
 ************************************************************
  Group 18. Limits
 VARMAX(P1)=1.0E+10 ;VARMIN(P1)=-1.0E+10
 VARMAX(U1)=1.0E+06 ;VARMIN(U1)=-1.0E+06
 VARMAX(PT0)=1.0E+10 ;VARMIN(PT0)=-1.0E+10
 VARMAX(PT1)=1.0E+10 ;VARMIN(PT1)=-1.0E+10
 VARMAX(VISL)=1.0E+10 ;VARMIN(VISL)=-1.0E+10
 VARMAX(DEN1)=1.0E+10 ;VARMIN(DEN1)=-1.0E+10
 VARMAX(VFOL)=1.0E+10 ;VARMIN(VFOL)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 ASLP = T
 PARSOL = F
 ISG62 = 1
 SPEDAT(SET,GXMONI,TRANSIENT,L,F)
 ************************************************************
  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(P1,Y,Y,Y,Y,Y,Y)
 OUTPUT(U1,Y,N,Y,Y,Y,Y)
 OUTPUT(PT0,Y,N,Y,Y,Y,Y)
 OUTPUT(PT1,Y,Y,Y,Y,Y,Y)
 OUTPUT(VISL,Y,N,Y,N,N,N)
 OUTPUT(DEN1,Y,N,Y,N,N,N)
 OUTPUT(VFOL,N,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
 NTPRIN = 100000 ;ISTPRF = 1 ;ISTPRL = 100000
 NXPRIN = 1 ;IXPRF = 1 ;IXPRL = 10000
 IPLTF = 2 ;IPLTL = 25 ;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
 IDISPA = 3 ;IDISPB = 0 ;IDISPC = 0
 CSG1    ='P'
STOP