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


  da 1 u2; da 1 uterm;screen
  msg 2nd-phase velocity & terminal velocity;col3 1;blb4 2
  msg press  to continue
  pause
  cl;screen
  msg press  to continue
  msg press e to END
  enduse
  DISPLAY
  The case considered is that of a particles falling through
  essentially stagnant air under gravity. The flow is steady, one
  dimensional and after a relatively short period of acceleration,
  the particles attain a uniform velocity under which the drag
  force balances the gravitational force. This velocity is called
  the terminal settling velocity, which is given by:

    Vset = [ 4.*{rho,p-rho,a}*g*diam,p/(3.*rho,a*Cd) ] ** 0.5

  The density ratio is taken as 1000 and the particle Reynolds
  number as 2,000. The calculation may be performed in the x-,
  y- or z-direction with phase 1 as continuous (air) and phase
  2 as dispersed (solid) or vice versa (CONPHS=2). The task is
  to calculate the terminal velocity of the particles.
  ENDDIS
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(1D SETTLING OF PARTICLES UNDER GRAVITY  )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 14
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 20
 XULAST =100.
 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 = F
 EQUVEL = F
 NAME(1)=P1 ;NAME(3)=U1
 NAME(4)=U2 ;NAME(9)=R1
 NAME(10)=R2 ;NAME(143)=TMP1
 NAME(144)=SIZE ;NAME(145)=CFIP
 NAME(146)=APRJ ;NAME(147)=CD
 NAME(148)=VREL ;NAME(149)=REYN
 NAME(150)=UTER
    * 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(U2,Y,Y,N,N,N,Y)
 SOLUTN(R1,Y,Y,N,N,N,Y)
 SOLUTN(R2,Y,Y,N,N,N,Y)
 SOLUTN(TMP1,Y,N,N,N,N,Y)
 SOLUTN(SIZE,Y,N,N,N,N,Y)
 SOLUTN(CFIP,Y,N,N,N,N,Y)
 SOLUTN(APRJ,Y,N,N,N,N,Y)
 SOLUTN(CD,Y,N,N,N,N,Y)
 SOLUTN(VREL,Y,N,N,N,N,Y)
 SOLUTN(REYN,Y,N,N,N,N,Y)
 SOLUTN(UTER,Y,N,N,N,N,Y)
 TEMP1 = 143
 ************************************************************
  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(U2,Y,Y,Y,Y,N,Y)
 TERMS(R1,Y,Y,Y,Y,Y,Y)
 TERMS(R2,Y,Y,Y,Y,N,Y)
 DIFCUT =0.5 ;ZDIFAC =1.
 GALA = F ;ADDDIF = F
 NEWENL = T
 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 = GRND1
 EL1 =0.
 TSURR =0. ;TEMP0 =0.
 PRESS0 =0.
 DVO1DT =0. ;DRH1DP =0.
 TMP1A =0. ;TMP1B =0.
 TMP1C =0.
 TMP2A =0. ;TMP2B =0.
 TMP2C =0.
 EMISS =0. ;SCATT =0.
 RADIA =0. ;RADIB =0.
 RHO2 =1000. ;TMP2 =0.
 EL2 =0.
 DVO2DT =0. ;DRH2DP =0.
 ENUL = GRND1 ;ENUT =0.
 ENULA =1.0E-06 ;ENULB =0.
 ENULC =0.
 PHINT(U1)=-2.022E+04 ;PHINT(U2)=-2.022E+04
 PHINT(R1)=-2.022E+04 ;PHINT(R2)=-2.022E+04
 PRNDTL(U1)=1. ;PRNDTL(U2)=1.
 PRNDTL(R1)=1. ;PRNDTL(R2)=1.
 PRT(U1)=1. ;PRT(U2)=1.
 PRT(R1)=1. ;PRT(R2)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 CFIPS = GRND7
 RLOLIM =0. ;CMDOT =0.
 CFIPA =1.0E-03 ;CFIPB =4.978263E-04
 CFIPC =0. ;CFIPD =0.
 CINT(P1)=1. ;CINT(U1)=1.
 CINT(U2)=1. ;CINT(R1)=1.
 CINT(R2)=1.
 PHINT(P1)=-2.022E+04 ;PHINT(U1)=-2.022E+04
 PHINT(U2)=-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(U1)=1.0E-03
 FIINIT(U2)=1.0E-03 ;FIINIT(R1)=1.
 FIINIT(R2)=2.489132E-07 ;FIINIT(TMP1)=1.0E-10
 FIINIT(SIZE)=1.0E-10 ;FIINIT(CFIP)=1.0E-10
 FIINIT(APRJ)=1.0E-10 ;FIINIT(CD)=1.0E-10
 FIINIT(VREL)=1.0E-10 ;FIINIT(REYN)=1.0E-10
 FIINIT(UTER)=4.017466
   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(IN ,CELL , 1, 1, 1, 1, 1, 1, 1, 1)
 COVAL(IN ,U1 ,0. ,1.0E-03 )
 COVAL(IN ,U2 ,0. ,1.0E-03 )
 COVAL(IN ,R1 , FIXFLU ,9.99E-04 )
 COVAL(IN ,R2 , FIXFLU ,1.0E-03 )
 
 PATCH(OUT ,CELL , 20, 20, 1, 1, 1, 1, 1, 1)
 COVAL(OUT ,U1 ,0. ,0. )
 COVAL(OUT ,U2 ,0. ,0. )
 COVAL(OUT ,R1 ,0.1 ,0. )
 COVAL(OUT ,R2 ,4.017466E+05 ,0. )
 
 PATCH(GRAVITY ,PHASEM, 1, 20, 1, 1, 1, 1, 1, 1)
 COVAL(GRAVITY ,U2 , FIXFLU ,9.800191 )
 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
 ISWR1 = 1 ;ISWR2 = 10000
 SELREF = T
 RESFAC =1.0E-04
 ************************************************************
  Group 16. Terminate Iterations
 LITER(P1)=20 ;LITER(U1)=10
 LITER(U2)=10 ;LITER(R1)=1
 LITER(R2)=1
 ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
 ENDIT(U2)=1.0E-03 ;ENDIT(R1)=1.0E-03
 ENDIT(R2)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(P1,LINRLX,1.)
 RELAX(U1,FALSDT,3.733697)
 RELAX(U2,FALSDT,3.733697)
 RELAX(R1,LINRLX,0.5)
 RELAX(R2,LINRLX,0.5)
 RELAX(TMP1,LINRLX,1.)
 RELAX(SIZE,LINRLX,1.)
 RELAX(CFIP,LINRLX,1.)
 RELAX(APRJ,LINRLX,1.)
 RELAX(CD,LINRLX,1.)
 RELAX(VREL,LINRLX,1.)
 RELAX(REYN,LINRLX,1.)
 RELAX(UTER,LINRLX,1.)
 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(U2)=1.0E+06 ;VARMIN(U2)=-1.0E+06
 VARMAX(R1)=1. ;VARMIN(R1)=1.0E-06
 VARMAX(R2)=1. ;VARMIN(R2)=1.0E-10
 VARMAX(TMP1)=1.0E+10 ;VARMIN(TMP1)=-1.0E+10
 VARMAX(SIZE)=1.0E+10 ;VARMIN(SIZE)=-1.0E+10
 VARMAX(CFIP)=1.0E+10 ;VARMIN(CFIP)=-1.0E+10
 VARMAX(APRJ)=1.0E+10 ;VARMIN(APRJ)=-1.0E+10
 VARMAX(CD)=1.0E+10 ;VARMIN(CD)=-1.0E+10
 VARMAX(VREL)=1.0E+10 ;VARMIN(VREL)=-1.0E+10
 VARMAX(REYN)=1.0E+10 ;VARMIN(REYN)=-1.0E+10
 VARMAX(UTER)=1.0E+10 ;VARMIN(UTER)=-1.0E+10
 ************************************************************
  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
 OUTPUT(P1,Y,N,Y,Y,Y,Y)
 OUTPUT(U1,Y,N,Y,Y,Y,Y)
 OUTPUT(U2,Y,N,Y,Y,Y,Y)
 OUTPUT(R1,Y,N,Y,Y,Y,Y)
 OUTPUT(R2,Y,N,Y,Y,Y,Y)
 OUTPUT(TMP1,Y,N,Y,N,N,N)
 OUTPUT(SIZE,Y,N,Y,N,N,N)
 OUTPUT(CFIP,Y,N,Y,N,N,N)
 OUTPUT(APRJ,Y,N,Y,N,N,N)
 OUTPUT(CD,Y,N,Y,N,N,N)
 OUTPUT(VREL,Y,N,Y,N,N,N)
 OUTPUT(REYN,Y,N,Y,N,N,N)
 OUTPUT(UTER,Y,N,Y,N,N,N)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 10 ;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
 NXPRIN = 1 ;IXPRF = 1 ;IXPRL = 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