```
TALK=T;RUN(1,1)
PHOTON USE
P

gr ou x 1
rot x ang 270
set vec ref 4.
vec x 1 sh
msg(             Water velocity distribution
msg( Press ENTER to continue
pause;
vec off;red
set vec comp - v2 w2
vec x 1 sh
msg(             Air velocity distribution
msg( Press ENTER to continue
pause;
vec off;red
con r2 x 1 z 1 20 fil;.01
msg(             Air volume fraction contours
msg( Press E to finish
ENDUSE
DISPLAY
Two-phase air-water  mixture  flows through the smooth expansion
of a duct.  PLANT is used to perform the GROUND condings for the
introduction of linear interphase friction law.
ENDDIS
PLANTBEGIN
** Set an inter-phase friction coefficient
CFIPS=GRND
INTFRC=500.*R2*MASS1
PLANTEND
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************

TEXT(PHASE DISTRIBUTION IN A SMOOTH EXPANSION)

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

IRUNN = 1 ;LIBREF = 103
************************************************************
Group 2. Time dependence
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 1
XULAST =1.
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 21
YVLAST =1.
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = F
NZ = 21
ZWLAST =8.333333
************************************************************
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,   2,   1,  22,   3,  22)
* 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 = 50
LIJ = F ;LJK = T ;LIK = F
SLIDS = F ;SLIDN = T
IMON = 1 ;JMON = 10 ;KMON = 10
************************************************************
Group 7. Variables: STOREd,SOLVEd,NAMEd
ONEPHS = F
EQUVEL = F
NAME(1)=P1 ;NAME(5)=V1
NAME(6)=V2 ;NAME(7)=W1
NAME(8)=W2 ;NAME(9)=R1
NAME(10)=R2 ;NAME(145)=W2CR
NAME(146)=V2CR ;NAME(147)=U2CR
NAME(148)=WCRT ;NAME(149)=VCRT
NAME(150)=UCRT
* 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(W1,Y,Y,N,N,N,Y)
SOLUTN(W2,Y,Y,N,N,N,Y)
SOLUTN(R1,Y,Y,N,N,N,Y)
SOLUTN(R2,Y,Y,N,N,N,Y)
SOLUTN(W2CR,Y,N,N,N,N,N)
SOLUTN(V2CR,Y,N,N,N,N,N)
SOLUTN(U2CR,Y,N,N,N,N,N)
SOLUTN(WCRT,Y,N,N,N,N,N)
SOLUTN(VCRT,Y,N,N,N,N,N)
SOLUTN(UCRT,Y,N,N,N,N,N)
************************************************************
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,Y,N,Y,Y)
TERMS(V2,Y,Y,N,N,N,Y)
TERMS(W1,Y,Y,Y,N,Y,Y)
TERMS(W2,Y,Y,N,N,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
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 =1000. ;TMP1 =0.
EL1 =0.
TSURR =0. ;TEMP0 =0.
PRESS0 =0.
DVO1DT =0. ;DRH1DP =0.
EMISS =0. ;SCATT =0.
RHO2 =1. ;TMP2 =0.
EL2 =0.
DVO2DT =0. ;DRH2DP =0.
ENUL =1.0E-04 ;ENUT =0.
PHINT(V1)=-2.022E+04 ;PHINT(V2)=-2.022E+04
PHINT(W1)=-2.022E+04 ;PHINT(W2)=-2.022E+04
PHINT(R1)=-2.022E+04 ;PHINT(R2)=-2.022E+04
PRNDTL(V1)=1. ;PRNDTL(W1)=1.
PRNDTL(R1)=1. ;PRNDTL(R2)=1.
PRT(V1)=1. ;PRT(W1)=1.
PRT(R1)=1. ;PRT(R2)=1.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
CFIPS = GRND
RLOLIM =0. ;CMDOT =0.
CFIPA =0. ;CFIPB =0.
CFIPC =0. ;CFIPD =0.
CINT(P1)=1. ;CINT(V1)=1.
CINT(V2)=1. ;CINT(W1)=1.
CINT(W2)=1. ;CINT(R1)=1.
CINT(R2)=1.
PHINT(P1)=-2.022E+04 ;PHINT(V1)=-2.022E+04
PHINT(V2)=-2.022E+04 ;PHINT(W1)=-2.022E+04
PHINT(W2)=-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(W1)=2.5
FIINIT(W2)=2.5 ;FIINIT(R1)=0.9
FIINIT(R2)=0.1 ;FIINIT(W2CR)=1.0E-10
FIINIT(V2CR)=1.0E-10 ;FIINIT(U2CR)=1.0E-10
FIINIT(WCRT)=1.0E-10 ;FIINIT(VCRT)=1.0E-10
FIINIT(UCRT)=1.0E-10
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(INLET ,LOW , 1, 1, 1, 21, 1, 1, 1, 1)
COVAL(INLET ,W1 ,0. ,2.5 )
COVAL(INLET ,W2 ,0. ,2.5 )
COVAL(INLET ,R1 , FIXFLU ,2000. )
COVAL(INLET ,R2 , FIXFLU ,0.5 )

PATCH(WALL ,SWALL , 1, 1, 1, 1, 1, 21, 1, 1)
COVAL(WALL ,W1 ,1. ,0. )

PATCH(EXIT ,HIGH , 1, 1, 1, 21, 21, 21, 1, 1)
COVAL(EXIT ,R1 ,1000. ,0.071 )
COVAL(EXIT ,R2 ,1. ,0.071 )

PATCH(GRAVITY ,PHASEM, 1, 1, 1, 21, 1, 21, 1, 1)
COVAL(GRAVITY ,W1 , FIXFLU ,-9.81 )
COVAL(GRAVITY ,W2 , FIXFLU ,-9.81 )
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 150 ;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(V1)=10
LITER(V2)=10 ;LITER(W1)=10
LITER(W2)=10 ;LITER(R1)=1
LITER(R2)=1
ENDIT(P1)=1.0E-03 ;ENDIT(V1)=1.0E-03
ENDIT(V2)=1.0E-03 ;ENDIT(W1)=1.0E-03
ENDIT(W2)=1.0E-03 ;ENDIT(R1)=1.0E-03
ENDIT(R2)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,0.5)
RELAX(V1,FALSDT,1.0E-02)
RELAX(V2,FALSDT,1.0E-02)
RELAX(W1,FALSDT,1.0E-02)
RELAX(W2,FALSDT,1.0E-02)
RELAX(R1,LINRLX,0.5)
RELAX(R2,LINRLX,0.5)
RELAX(W2CR,LINRLX,1.)
RELAX(V2CR,LINRLX,1.)
RELAX(U2CR,LINRLX,1.)
RELAX(WCRT,LINRLX,1.)
RELAX(VCRT,LINRLX,1.)
RELAX(UCRT,LINRLX,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(W1)=1.0E+06 ;VARMIN(W1)=-1.0E+06
VARMAX(W2)=1.0E+06 ;VARMIN(W2)=-1.0E+06
VARMAX(R1)=1. ;VARMIN(R1)=1.0E-06
VARMAX(R2)=1. ;VARMIN(R2)=1.0E-06
VARMAX(W2CR)=1.0E+10 ;VARMIN(W2CR)=-1.0E+10
VARMAX(V2CR)=1.0E+10 ;VARMIN(V2CR)=-1.0E+10
VARMAX(U2CR)=1.0E+10 ;VARMIN(U2CR)=-1.0E+10
VARMAX(WCRT)=1.0E+10 ;VARMIN(WCRT)=-1.0E+10
VARMAX(VCRT)=1.0E+10 ;VARMIN(VCRT)=-1.0E+10
VARMAX(UCRT)=1.0E+10 ;VARMIN(UCRT)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
NAMSAT =MOSG
PARSOL = F
ISG62 = 1
************************************************************
Group 20. Preliminary Printout
DISTIL = T ;NULLPR = F
NDST = 0
DSTTOL =1.0E-02
EX(P1)=3.621E+04 ;EX(V1)=0.04288
EX(V2)=0.04326 ;EX(W1)=1.596
EX(W2)=1.617 ;EX(R1)=0.8022
EX(R2)=0.1978 ;EX(W2CR)=1.597
EX(V2CR)=0.09936 ;EX(U2CR)=0.
EX(WCRT)=1.577 ;EX(VCRT)=0.09813
EX(UCRT)=0.
************************************************************
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(V1,Y,N,Y,Y,Y,Y)
OUTPUT(V2,Y,N,Y,Y,Y,Y)
OUTPUT(W1,Y,N,Y,Y,Y,Y)
OUTPUT(W2,Y,N,Y,Y,Y,Y)
OUTPUT(R1,Y,N,Y,Y,Y,Y)
OUTPUT(R2,Y,N,Y,Y,Y,Y)
OUTPUT(W2CR,Y,N,Y,N,N,N)
OUTPUT(V2CR,Y,N,Y,N,N,N)
OUTPUT(U2CR,Y,N,Y,N,N,N)
OUTPUT(WCRT,Y,N,Y,N,N,N)
OUTPUT(VCRT,Y,N,Y,N,N,N)
OUTPUT(UCRT,Y,N,Y,N,N,N)
************************************************************
Group 22. Monitor Print-Out
IXMON = 1 ;IYMON = 3 ;IZMON = 10
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
```