TALK=T;RUN(1,1)
  AUTOPLOT USE
  file
  phi 5

  da 1
  v1
  screen
  msg 1st-phase velocity at t=4000s
  pl 1
  msg press  to continue
  pause
  cl
  da 1
  v2
  screen
  msg 2nd-phase velocity at t=4000s
  pl 1
  msg press  to continue
  pause
  cl
  da 1
  r1
  screen
  msg 1st-phase volume fraction at t=4000s
  pl 1
  msg press  to continue
  pause
  cl
  da 1
  r2
  screen
  msg 2nd-phase volume fraction at t=4000s
  pl 1
  msg press  to continue
  pause
  cl
  da 1
  p1
  screen
  msg pressure at t=4000s
  pl 1
  msg press e to END
  enduse
  DISPLAY
    The problem involves the falling of a denser fluid through a
    lighter one, under conditions in which the inertia terms are
    negligible, and the density differences are slight.
    An analytical solution exists for this problem.
  ENDDIS
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(SEDIMENTATION WITH RHO2=0.2 :       W892)
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 891
 ************************************************************
  Group 2. Time dependence
 STEADY = F
    * Set overall time and no. of steps
 TFIRST =0. ;TLAST =4000.
 FSTEP = 1 ;LSTEP = 40
 TFRAC(1)=0.025 ;TFRAC(6)=0.15
 TFRAC(11)=0.275 ;TFRAC(16)=0.4
 TFRAC(21)=0.525 ;TFRAC(26)=0.65
 TFRAC(31)=0.775 ;TFRAC(36)=0.9
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 1
 XULAST =1.
 XFRAC(1)=1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 20
 YVLAST =2.
 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 = F
 EQUVEL = F
 NAME(1)=P1 ;NAME(5)=V1
 NAME(6)=V2 ;NAME(9)=R1
 NAME(10)=R2
    * 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(V1,Y,Y,N,N,N,Y)
 SOLUTN(V2,Y,Y,N,N,N,Y)
 SOLUTN(R1,Y,Y,N,N,N,Y)
 SOLUTN(R2,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(P1,Y,Y,Y,N,Y,Y)
 TERMS(V1,Y,Y,N,Y,Y,Y)
 TERMS(V2,Y,Y,N,Y,N,Y)
 TERMS(R1,Y,Y,N,Y,Y,Y)
 TERMS(R2,Y,Y,N,Y,N,Y)
 DIFCUT =0.5 ;ZDIFAC =1.
 GALA = F ;ADDDIF = F
 EQDVDP = 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.
 RHO2 =0.2 ;TMP2 =0. ;EL2 =0.
 DVO2DT =0. ;DRH2DP =0.
 ENUL =0. ;ENUT =0.
 PHINT(V1)=-2.022E+04 ;PHINT(V2)=-2.022E+04
 PHINT(R1)=-2.022E+04 ;PHINT(R2)=-2.022E+04
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 CFIPS =1000.
 RLOLIM =0. ;CMDOT =0.
 CINT(P1)=1. ;CINT(V1)=1.
 CINT(V2)=1. ;CINT(R1)=1.
 CINT(R2)=1.
 PHINT(P1)=-2.022E+04 ;PHINT(V1)=-2.022E+04
 PHINT(V2)=-2.022E+04 ;PHINT(R1)=-2.022E+04
 PHINT(R2)=-2.022E+04
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(P1)=1.0E-10 ;FIINIT(V1)=1.0E-10
 FIINIT(V2)=1.0E-10 ;FIINIT(R1)=1.
 FIINIT(R2)=0.
 
 PATCH(START ,INIVAL, 1, 1, 11, 20, 1, 1, 1, 1)
 INIT(START ,R1 ,0. ,-1. )
 INIT(START ,R2 ,0. ,1. )
 INIADD = T
 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(BOTTOM ,CELL , 1, 1, 1, 1, 1, 1, 1, 40)
 COVAL(BOTTOM ,V1 ,0. ,0. )
 COVAL(BOTTOM ,V2 ,0. ,0. )
 COVAL(BOTTOM ,R1 ,1. ,0. )
 COVAL(BOTTOM ,R2 ,1. ,0. )
 
 PATCH(WEIGHT ,PHASEM, 1, 1, 1, 20, 1, 1, 1, 40)
 COVAL(WEIGHT ,V1 , FIXFLU ,0.6 )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 50 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 ISWR1 = 1 ;ISWR2 = 10000
 SELREF = T
 RESFAC =1.0E-05
 ************************************************************
  Group 16. Terminate Iterations
 LITER(P1)=20 ;LITER(V1)=10
 LITER(V2)=10 ;LITER(R1)=1
 LITER(R2)=1
 ENDIT(P1)=1.0E-03 ;ENDIT(V1)=1.0E-03
 ENDIT(V2)=1.0E-03 ;ENDIT(R1)=1.0E-03
 ENDIT(R2)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(P1,LINRLX,1.)
 RELAX(V1,FALSDT,0.1)
 RELAX(V2,FALSDT,0.1)
 RELAX(R1,LINRLX,0.1)
 RELAX(R2,LINRLX,0.1)
 OVRRLX =0.
 EXPERT = F ;NNORSL = F
 ************************************************************
  Group 18. Limits
 VARMAX(P1)=1.0E+10 ;VARMIN(P1)=-1.0E+10
 VARMAX(V1)=1.0E+06 ;VARMIN(V1)=-1.0E+06
 VARMAX(V2)=1.0E+06 ;VARMIN(V2)=-1.0E+06
 VARMAX(R1)=1. ;VARMIN(R1)=1.0E-05
 VARMAX(R2)=1. ;VARMIN(R2)=1.0E-05
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 ISG62 = 1
 SPEDAT(SET,GXMONI,TRANSIENT,L,F)
 SPEDAT(SET,GXMONI,PLOTALL,L,T)
 ************************************************************
  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(V1,Y,Y,Y,Y,Y,Y)
 OUTPUT(V2,Y,Y,Y,Y,Y,Y)
 OUTPUT(R1,Y,N,Y,Y,Y,Y)
 OUTPUT(R2,Y,Y,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
 NTPRIN = 5 ;ISTPRF = 1 ;ISTPRL = 100000
 NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10000
 IPLTF = 1 ;IPLTL = 50 ;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(LONGPLOT,PROFIL, 1, 1, 1, 20, 1, 1, 1, 40)
 PLOT(LONGPLOT,R1 ,0. ,1. )
 
 PATCH(TIMEPLOT,PROFIL, 1, 1, 10, 10, 1, 1, 1, 40)
 PLOT(TIMEPLOT,V1 ,0. ,0. )
 PLOT(TIMEPLOT,V2 ,0. ,0. )
 ************************************************************
  Group 24. Dumps For Restarts
 SAVE = T ;NOWIPE = F
 NSAVE =CHAM
STOP