TALK=T;RUN(1,1)
photon use
p;parphi;;;;;
mesg horizontal direction (z) represents time
gr y 1
msg first-phase volume-fraction contours
con r1 y 1 fi;0.05;pause
msg first-phase velocity contours
con u1 y 1 fi;0.05;pause
msg pressure contours
con p1 y 1 fi;0.05
enduse
DISPLAY
The initial condition is that two fluids of equal density are
moving at equal but opposite velocity within a duct of uniform
cross-section; and each has a volume fraction of 0.5.
Because the ends of the duct are closed, each fluid tends to
accumulate at the end towards which it is moving.
Fluid-to-fluid and fluid-to-wall friction are neglected. One
consequence is the growth of an instability in the interface,
exhibited by a reduction in the volume fraction of each fluid
just ahead of the point at which it rises to unity.
Instabilities of Kelvin-Helmholtz type are known to arise in
such flows; but the one just mentioned is more likely to be a
consequence of the fact that no provision has been made for the
enhanced fluid-to-fluid momentum transfer which occurs at an
abrupt chnage of vulume fraction, which is akin to a 'hydraulic
jump'.
A PHOTON USE file is provided for display purposes.
ENDDIS
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************
TEXT(fluids moving in opposite directions:423)
************************************************************
************************************************************
IRUNN = 1 ;LIBREF = 14
************************************************************
Group 2. Time dependence
STEADY = F
* Set overall time and no. of steps
TFIRST =0. ;TLAST =1.5
FSTEP = 1 ;LSTEP = 60
TFRAC(1)=0.016667 ;TFRAC(2)=0.033333
TFRAC(3)=0.05 ;TFRAC(4)=0.066667
TFRAC(5)=0.083333 ;TFRAC(6)=0.1
TFRAC(7)=0.116667 ;TFRAC(8)=0.133333
TFRAC(9)=0.15 ;TFRAC(10)=0.166667
TFRAC(11)=0.183333 ;TFRAC(12)=0.2
TFRAC(13)=0.216667 ;TFRAC(14)=0.233333
TFRAC(15)=0.25 ;TFRAC(16)=0.266667
TFRAC(17)=0.283333 ;TFRAC(18)=0.3
TFRAC(19)=0.316667 ;TFRAC(20)=0.333333
TFRAC(21)=0.35 ;TFRAC(22)=0.366667
TFRAC(23)=0.383333 ;TFRAC(24)=0.4
TFRAC(25)=0.416667 ;TFRAC(26)=0.433333
TFRAC(27)=0.45 ;TFRAC(28)=0.466667
TFRAC(29)=0.483333 ;TFRAC(30)=0.5
TFRAC(31)=0.516667 ;TFRAC(32)=0.533333
TFRAC(33)=0.55 ;TFRAC(34)=0.566667
TFRAC(35)=0.583333 ;TFRAC(36)=0.6
TFRAC(37)=0.616667 ;TFRAC(38)=0.633333
TFRAC(39)=0.65 ;TFRAC(40)=0.666667
TFRAC(41)=0.683333 ;TFRAC(42)=0.7
TFRAC(43)=0.716667 ;TFRAC(44)=0.733333
TFRAC(45)=0.75 ;TFRAC(46)=0.766667
TFRAC(47)=0.783333 ;TFRAC(48)=0.8
TFRAC(49)=0.816667 ;TFRAC(50)=0.833333
TFRAC(51)=0.85 ;TFRAC(52)=0.866667
TFRAC(53)=0.883333 ;TFRAC(54)=0.9
TFRAC(55)=0.916667 ;TFRAC(56)=0.933333
TFRAC(57)=0.95 ;TFRAC(58)=0.966667
TFRAC(59)=0.983333 ;TFRAC(60)=1.
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 30
XULAST =0.5
XFRAC(1)=0.033333 ;XFRAC(2)=0.066667
XFRAC(3)=0.1 ;XFRAC(4)=0.133333
XFRAC(5)=0.166667 ;XFRAC(6)=0.2
XFRAC(7)=0.233333 ;XFRAC(8)=0.266667
XFRAC(9)=0.3 ;XFRAC(10)=0.333333
XFRAC(11)=0.366667 ;XFRAC(12)=0.4
XFRAC(13)=0.433333 ;XFRAC(14)=0.466667
XFRAC(15)=0.5 ;XFRAC(16)=0.533333
XFRAC(17)=0.566667 ;XFRAC(18)=0.6
XFRAC(19)=0.633333 ;XFRAC(20)=0.666667
XFRAC(21)=0.7 ;XFRAC(22)=0.733333
XFRAC(23)=0.766667 ;XFRAC(24)=0.8
XFRAC(25)=0.833333 ;XFRAC(26)=0.866667
XFRAC(27)=0.9 ;XFRAC(28)=0.933333
XFRAC(29)=0.966667 ;XFRAC(30)=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
* 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)
************************************************************
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,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 =1. ;TMP2 =0. ;EL2 =0.
DVO2DT =0. ;DRH2DP =0.
ENUL =0. ;ENUT =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.
PRT(U1)=1. ;PRT(U2)=1.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
CFIPS =0.
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=1.0E-10 ;FIINIT(U1)=0.1
FIINIT(U2)=-0.1 ;FIINIT(R1)=0.5
FIINIT(R2)=0.5
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(RELIEF ,CELL , 15, 15, 1, 1, 1, 1, 1, 60)
COVAL(RELIEF ,U1 ,0. ,0. )
COVAL(RELIEF ,R1 ,1. ,0. )
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 20 ;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(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,1.)
RELAX(U2,FALSDT,1.)
RELAX(R1,LINRLX,0.4)
RELAX(R2,LINRLX,0.4)
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-10
VARMAX(R2)=1. ;VARMIN(R2)=1.0E-10
************************************************************
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,N,Y,Y,Y,Y)
OUTPUT(U1,Y,N,Y,Y,Y,Y)
OUTPUT(U2,Y,N,Y,Y,Y,Y)
OUTPUT(R1,Y,Y,Y,Y,Y,Y)
OUTPUT(R2,Y,Y,Y,Y,Y,Y)
************************************************************
Group 22. Monitor Print-Out
IXMON = 1 ;IYMON = 1 ;IZMON = 1
NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = 19
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 = 1 ;IPLTL = -1 ;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(IXPLOT ,PROFIL, 1, 30, 1, 1, 1, 1, 1, 60)
PLOT(IXPLOT ,R1 ,0. ,1. )
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
IDISPA = 4 ;IDISPB = 0 ;IDISPC = 0
STOP