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

1 5 1

msg The grid (magnified by 5 in the y direction)
gr z 1
msg Press  to continue
pause
cl
msg Velocity vector field
set vec ref 0.4
gr ou z 1
vec z 1 sh
msg Press  to continue
pause
cl
msg Concentration contours of particle 1
gr ou z 1
con pt1 z 1 fi;0.01
msg Press  to continue
pause
cl
msg Concentration contours of particle 2
gr ou z 1
con pt2 z 1 fi;0.01
msg Press  to continue
pause
cl
msg Concentration contours of particle 3
gr ou z 1
con pt3 z 1 fi;0.01
msg Press e to END
enduse
DISPLAY
2-dimensional (x-y), Cartesian, steady, elliptic simulation

This case calculates the accumulation of particles in a flow in
which the particle-slip velocities are normal to the main flow
direction, which is from low to high x. Three groups of particles,
of different densities but the same diameter, are included. They
are such that the first group is denser than the continuous phase,
the second group is neutrally buoyant and the third group is less
dense.

/////////////////////////
------------------------- north wall
y^
|    --> in                      --> out (3 exits)
|
---->   ------------------------- south wall
x   /////////////////////////
ENDDIS
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************

TEXT(Particle accumulation along duct walls:P)

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

IRUNN = 1 ;LIBREF = 30
************************************************************
Group 2. Time dependence
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 10
XULAST =5.
XFRAC(1)=0.1 ;XFRAC(2)=0.2
XFRAC(3)=0.3 ;XFRAC(4)=0.4
XFRAC(5)=0.5 ;XFRAC(6)=0.6
XFRAC(7)=0.7 ;XFRAC(8)=0.8
XFRAC(9)=0.9 ;XFRAC(10)=1.
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 10
YVLAST =0.2
YFRAC(1)=0.1 ;YFRAC(2)=0.2
YFRAC(3)=0.3 ;YFRAC(4)=0.4
YFRAC(5)=0.5 ;YFRAC(6)=0.6
YFRAC(7)=0.7 ;YFRAC(8)=0.8
YFRAC(9)=0.9 ;YFRAC(10)=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 = T
NAME(1)=P1 ;NAME(3)=U1
NAME(5)=V1 ;NAME(16)=PT0
NAME(17)=PT1 ;NAME(18)=PT2
NAME(19)=PT3 ;NAME(148)=VFOL
NAME(149)=VISL ;NAME(150)=DEN1
* 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,Y,N,N,Y)
SOLUTN(U1,Y,Y,Y,N,N,Y)
SOLUTN(V1,Y,Y,Y,N,N,Y)
SOLUTN(PT0,Y,Y,N,N,N,Y)
SOLUTN(PT1,Y,Y,N,N,N,Y)
SOLUTN(PT2,Y,Y,N,N,N,Y)
SOLUTN(PT3,Y,Y,N,N,N,Y)
SOLUTN(VFOL,Y,Y,N,N,N,Y)
SOLUTN(VISL,Y,N,N,N,N,Y)
SOLUTN(DEN1,Y,N,N,N,N,Y)
DEN1 = 150
VISL = 149
************************************************************
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(V1,Y,Y,Y,Y,Y,Y)
TERMS(PT0,N,Y,Y,Y,Y,Y)
TERMS(PT1,N,Y,Y,Y,N,Y)
TERMS(PT2,N,Y,Y,Y,Y,Y)
TERMS(PT3,N,Y,Y,Y,N,Y)
TERMS(VFOL,N,N,N,N,Y,Y)
DIFCUT =0.5 ;ZDIFAC =1.
GALA = T ;ADDDIF = F
NEWRH1 = T
NEWENL = T
ISOLX = -1 ;ISOLY = -1 ;ISOLZ = -1
************************************************************
Group 9. Properties used if PRPS is not
stored, and where PRPS = -1.0 if it is!
RHO1 = GRND ;TMP1 =0.
EL1 =0.
TSURR =0. ;TEMP0 =0.
PRESS0 =0.
DVO1DT =0. ;DRH1DP =0.
RHO1A =0. ;RHO1B =0.
RHO1C =0.
EMISS =0. ;SCATT =0.
ENUL = GRND ;ENUT =0.
ENULA =0. ;ENULB =0.
ENULC =0.
CINT(PT0)=1. ;CINT(PT1)=1.0E-04
CINT(PT2)=1.0E-04 ;CINT(PT3)=1.2E-04
CINT(VFOL)=1. ;CINT(VISL)=1.
CINT(DEN1)=1.
PHINT(PT0)=1000. ;PHINT(PT1)=2000.
PHINT(PT2)=1000. ;PHINT(PT3)=500.
PHINT(VFOL)=-2.022E+04 ;PHINT(VISL)=-2.022E+04
PHINT(DEN1)=-2.022E+04
PRNDTL(U1)=1. ;PRNDTL(V1)=1.
PRNDTL(PT0)=1.0E-05 ;PRNDTL(PT1)=2.0E-05
PRNDTL(PT2)=1.0E-05 ;PRNDTL(PT3)=1.0E-06
PRT(U1)=1. ;PRT(V1)=1.
PRT(PT0)=1. ;PRT(PT1)=1.
PRT(PT2)=1. ;PRT(PT3)=1.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=1.0E+04 ;FIINIT(U1)=0.2
FIINIT(V1)=0. ;FIINIT(PT0)=0.599
FIINIT(PT1)=0.2 ;FIINIT(PT2)=1.0E-03
FIINIT(PT3)=0.2 ;FIINIT(VFOL)=1.0E-10
FIINIT(VISL)=1.0E-10 ;FIINIT(DEN1)=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(ASMIN ,WEST , 1, 1, 1, 10, 1, 1, 1, 1)
COVAL(ASMIN ,P1 , FIXFLU ,220. )
COVAL(ASMIN ,U1 ,0. ,0.2 )
COVAL(ASMIN ,PT0 ,0. ,0.599 )
COVAL(ASMIN ,PT1 ,0. ,0.2 )
COVAL(ASMIN ,PT2 ,0. ,1.0E-03 )
COVAL(ASMIN ,PT3 ,0. ,0.2 )
COVAL(ASMIN ,VFOL,0. ,9.090909E-04 )

PATCH(ASMOU1 ,EAST , 10, 10, 1, 1, 1, 1, 1, 1)
COVAL(ASMOU1 ,P1 ,10. ,2000. )

PATCH(ASMOU2 ,EAST , 10, 10, 10, 10, 1, 1, 1, 1)
COVAL(ASMOU2 ,P1 ,10. ,0. )

PATCH(ASMOU3 ,EAST , 10, 10, 5, 5, 1, 1, 1, 1)
COVAL(ASMOU3 ,P1 ,10. ,1000. )

PATCH(BUOYANCY,PHASEM, 1, 10, 1, 10, 1, 1, 1, 1)
COVAL(BUOYANCY,V1 , FIXFLU , GRND1 )
XCYCLE = F
EGWF = T
WALLCO = GRND2
BUOYA =0. ; BUOYB =-9.81
BUOYC =0.
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 70 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = F
RESREF(P1)=1.0E-08 ;RESREF(U1)=1.0E-08
RESREF(V1)=1.0E-08 ;RESREF(PT0)=1.0E-08
RESREF(PT1)=1.0E-08 ;RESREF(PT2)=1.0E-08
RESREF(PT3)=1.0E-08 ;RESREF(VFOL)=1.0E-08
************************************************************
Group 16. Terminate Iterations
LITER(P1)=20 ;LITER(U1)=10
LITER(V1)=10 ;LITER(PT0)=2
LITER(PT1)=5 ;LITER(PT2)=20
LITER(PT3)=20 ;LITER(VFOL)=20
ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
ENDIT(V1)=1.0E-03 ;ENDIT(PT0)=1.0E-08
ENDIT(PT1)=1.0E-05 ;ENDIT(PT2)=1.0E-03
ENDIT(PT3)=1.0E-03 ;ENDIT(VFOL)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(U1,FALSDT,1.)
RELAX(V1,FALSDT,1.)
RELAX(PT0,LINRLX,0.5)
RELAX(PT1,LINRLX,0.5)
RELAX(PT2,FALSDT,1.0E+09)
RELAX(PT3,FALSDT,1.0E+09)
RELAX(VFOL,FALSDT,1.0E+09)
RELAX(VISL,LINRLX,1.)
RELAX(DEN1,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(V1)=1.0E+06 ;VARMIN(V1)=-1.0E+06
VARMAX(PT0)=1.0E+10 ;VARMIN(PT0)=-1.0E+10
VARMAX(PT1)=1.0E+10 ;VARMIN(PT1)=-1.0E+10
VARMAX(PT2)=1.0E+10 ;VARMIN(PT2)=-1.0E+10
VARMAX(PT3)=1.0E+10 ;VARMIN(PT3)=-1.0E+10
VARMAX(VFOL)=1.0E+10 ;VARMIN(VFOL)=-1.0E+10
VARMAX(VISL)=1.0E+10 ;VARMIN(VISL)=-1.0E+10
VARMAX(DEN1)=1.0E+10 ;VARMIN(DEN1)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
ASLP = T
PARSOL = F
LASLPA = T ;LASLPB = T
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,Y,Y,Y,Y,Y)
OUTPUT(U1,Y,Y,Y,Y,Y,Y)
OUTPUT(V1,Y,Y,Y,Y,Y,Y)
OUTPUT(PT0,Y,N,Y,Y,Y,Y)
OUTPUT(PT1,Y,N,Y,Y,Y,Y)
OUTPUT(PT2,Y,N,Y,Y,Y,Y)
OUTPUT(PT3,Y,N,Y,Y,Y,Y)
OUTPUT(VFOL,N,N,Y,N,N,N)
OUTPUT(VISL,Y,N,Y,N,N,N)
OUTPUT(DEN1,Y,N,Y,N,N,N)
************************************************************
Group 22. Monitor Print-Out
IXMON = 5 ;IYMON = 2 ;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
NYPRIN = 1 ;IYPRF = 1 ;IYPRL = 10000
IPLTF = 2 ;IPLTL = 70 ;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
```