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

da 1
1u
screen
msg 1st-phase (gas) velocity at t=1s
pl 1
msg press  to continue
pause
cl
da 1
2u
screen
msg 2nd-phase (liquid) velocity at t=1s
pl 1
msg press  to continue
pause
cl
da 1
gas
screen
msg 1st-phase (gas) volume fraction at t=1s
pl 1
msg press  to continue
pause
cl
da 1
liq
screen
msg 2nd-phase (liquid) volume fraction at t=1s
pl 1
msg press  to continue
pause
cl
da 1
p1
screen
msg pressure at t=1s
pl 1
msg press e to END
enduse
DISPLAY
This problem concerns what happens when a horizontal pipe,
partly filled with water initially at rest, is allowed to
drain out through one end as a consequence of the sudden
removal of one end cap.
ENDDIS
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************

TEXT(TRANSIENT DRAINAGE  FROM A PIPE     W902)

************************************************************
************************************************************

IRUNN = 1 ;LIBREF = 14
************************************************************
Group 2. Time dependence
* Set overall time and no. of steps
TFIRST =0. ;TLAST =1.
FSTEP = 1 ;LSTEP = 10
TFRAC(1)=0.1 ;TFRAC(6)=0.6
************************************************************
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 = F
EQUVEL = F
NAME(1)=P1 ;NAME(3)=1U
NAME(4)=2U ;NAME(9)=GAS
NAME(10)=LIQ
* 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(1U,Y,Y,N,N,N,Y)
SOLUTN(2U,Y,Y,N,N,N,Y)
SOLUTN(GAS,Y,Y,N,N,N,Y)
SOLUTN(LIQ,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(1U,Y,Y,N,Y,Y,Y)
TERMS(2U,Y,Y,N,Y,N,Y)
TERMS(GAS,Y,Y,N,Y,Y,Y)
TERMS(LIQ,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.
RHO2 =1000. ;TMP2 =0.
EL2 =0.
DVO2DT =0. ;DRH2DP =0.
ENUL =1.0E-05 ;ENUT =0.
PHINT(1U)=-2.022E+04 ;PHINT(2U)=-2.022E+04
PHINT(GAS)=-2.022E+04 ;PHINT(LIQ)=-2.022E+04
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
CFIPS =0.
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=1.0E-10 ;FIINIT(1U)=0.
FIINIT(2U)=0. ;FIINIT(GAS)=0.69238
FIINIT(LIQ)=0.30762
No PATCHes yet used for this Group
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(OUTLET ,CELL , 20, 20, 1, 1, 1, 1, 1, 10)
COVAL(OUTLET ,GAS , FIXVAL ,0. )
COVAL(OUTLET ,LIQ ,1000. ,-1. )

PATCH(LATGPIPE,CELL , 1, 20, 1, 1, 1, 1, 1, 10)
COVAL(LATGPIPE,2U , FIXFLU , GRND10 )
XCYCLE = F
EGWF = T
WALLCO = GRND2
BUOYA =1. ; BUOYB =0.
BUOYC =0.
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 40 ;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(1U)=10
LITER(2U)=10 ;LITER(GAS)=1
LITER(LIQ)=1
ENDIT(P1)=1.0E-03 ;ENDIT(1U)=1.0E-03
ENDIT(2U)=1.0E-03 ;ENDIT(GAS)=1.0E-03
ENDIT(LIQ)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(1U,FALSDT,0.1)
RELAX(2U,FALSDT,1.0E-02)
RELAX(GAS,LINRLX,0.5)
RELAX(LIQ,LINRLX,0.5)
OVRRLX =0.
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
VARMAX(P1)=1.0E+10 ;VARMIN(P1)=-1.0E+10
VARMAX(1U)=1.0E+06 ;VARMIN(1U)=-1.0E+06
VARMAX(2U)=1.0E+06 ;VARMIN(2U)=-1.0E+06
VARMAX(GAS)=1. ;VARMIN(GAS)=1.0E-06
VARMAX(LIQ)=1. ;VARMIN(LIQ)=1.0E-06
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
ILATGA = 3
ISG62 = 1
HGSOA =1.0E-04 ;HGSOB =-999.
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(1U,Y,Y,Y,Y,Y,Y)
OUTPUT(2U,Y,Y,Y,Y,Y,Y)
OUTPUT(GAS,Y,Y,Y,Y,Y,Y)
OUTPUT(LIQ,Y,N,Y,Y,Y,Y)
************************************************************
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
NTPRIN = 5 ;ISTPRF = 1 ;ISTPRL = 100000
NXPRIN = 1 ;IXPRF = 1 ;IXPRL = 10000
IPLTF = 1 ;IPLTL = 40 ;NPLT = -1
ISWPRF = 1 ;ISWPRL = 100000
ITABL = 1 ;IPROF = 1
ABSIZ =0.5 ;ORSIZ =0.4
NTZPRF = 1 ;NCOLPF = 50
ICHR = 2 ;NCOLCO = 45 ;NROWCO = 20

PATCH(XWISE ,PROFIL, 1, 20, 1, 1, 1, 1, 1, 10)
PLOT(XWISE ,2U ,0. ,0. )
PLOT(XWISE ,LIQ ,0. ,0. )

PATCH(TIMEWISE,PROFIL, 10, 10, 1, 1, 1, 1, 1, 10)
PLOT(TIMEWISE,2U ,0. ,0. )
PLOT(TIMEWISE,LIQ ,0. ,0. )
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
STOP
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