TALK=T;RUN(1,1)
  DISPLAY
    An extra momentum source is added to the axial momentum
  equation to represent a buoyancy force, in order to simulate
  free convection in a pipe flow.

                     . - .
                   /       \
                  |         |
                  |\       /|
    Axial    g    |         | ^
    buoyancy |    |         | |
    force    v    |         | |z
    acts as       |         |
    momentum      |  . - .  |
    source        |/       \|
                  |  ^   ^  |  Fixed mass,
                   \ |   | /---momentum and
                     | - |     enthalpy flux
                        -->    into inlet
                        r
  ENDDIS
  PHOTON USE
  p
  parphi
  10 1

  up z
  gr ou x 1
  msg radial scal is enlarged by factor of 10
  msg velocity vectors
  vec x 1 sh
  pause
  msg enthalpy contours
  con h1 x 1 fi;0.001
  pause
  msg presure contours
  con p1 x 1 fi;0.001
  pause
  msg velocity contours
  con w1 x 1 fi;0.001
  ENDUSE
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(Pipe Flow With Axial Free Convec        )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 0
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = F
 NX = 1
 XULAST =1.
 XFRAC(1)=1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 20
 YVLAST =1.0E-02
 YFRAC(1)=0.05 ;YFRAC(3)=0.15
 YFRAC(5)=0.25 ;YFRAC(7)=0.35
 YFRAC(9)=0.45 ;YFRAC(11)=0.55
 YFRAC(13)=0.65 ;YFRAC(15)=0.75
 YFRAC(17)=0.85 ;YFRAC(19)=0.95
 ************************************************************
  Group 5. Z-Direction Grid Spacing
 PARAB = T
 NZ = 20
 ZWLAST =0.2
 ZFRAC(1)=0.05 ;ZFRAC(11)=0.55
 ************************************************************
  Group 6. Body-Fitted Coordinates
 ************************************************************
  Group 7. Variables: STOREd,SOLVEd,NAMEd
 ONEPHS = T
 NAME(1)=P1 ;NAME(5)=V1
 NAME(7)=W1 ;NAME(14)=H1
 NAME(150)=PRPS
    * 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(V1,Y,Y,Y,N,N,Y)
 SOLUTN(W1,Y,Y,Y,N,N,Y)
 SOLUTN(H1,Y,Y,N,N,N,Y)
 SOLUTN(PRPS,Y,N,N,N,N,Y)
 PRPS = 150
 ************************************************************
  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,Y,Y,Y)
 TERMS(W1,Y,Y,Y,Y,Y,Y)
 TERMS(H1,Y,Y,Y,Y,Y,Y)
 DIFCUT =0.5 ;ZDIFAC =1.
 GALA = F ;ADDDIF = 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 =1.189 ;TMP1 =0.
 EL1 =0.
 TSURR =0. ;TEMP0 =0.
 PRESS0 =0.
 DVO1DT =3.41E-03 ;DRH1DP =0.
 EMISS =0. ;SCATT =0.
 RADIA =0. ;RADIB =0.
 ENUL =1.544E-05 ;ENUT =0.
 PRNDTL(V1)=1. ;PRNDTL(W1)=1.
 PRNDTL(H1)=0.7
 PRT(V1)=1. ;PRT(W1)=1.
 PRT(H1)=1.
 CP1 =1005. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(P1)=1.0E-10 ;FIINIT(V1)=1.0E-10
 FIINIT(W1)=1.0E-10 ;FIINIT(H1)=1.0E-10
 FIINIT(PRPS)=-1.
   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(UNIFORM ,LOW , 1, 1, 1, 20, 1, 1, 1, 1)
 COVAL(UNIFORM ,P1 , FIXFLU ,0.1 )
 COVAL(UNIFORM ,V1 ,0. ,0. )
 COVAL(UNIFORM ,W1 ,0. ,0.1 )
 COVAL(UNIFORM ,H1 ,0. ,0. )
 
 PATCH(PIPE ,NWALL , 1, 1, 20, 20, 1, 20, 1, 1)
 COVAL(PIPE ,W1 ,1. ,0. )
 COVAL(PIPE ,H1 ,1. ,1000. )
 
 PATCH(BUOYANCY,PHASEM, 1, 1, 1, 20, 1, 20, 1, 1)
 COVAL(BUOYANCY,W1 , FIXFLU , GRND3 )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 BUOYA =0. ; BUOYB =0.
 BUOYC =-9.81
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 IPARAB = 0
 AZPH =0. ;PBAR =0.
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 1 ;ISWC1 = 1
 LITHYD = 30 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =1.0E-04
 ************************************************************
  Group 16. Terminate Iterations
 LITER(P1)=20 ;LITER(V1)=10
 LITER(W1)=10 ;LITER(H1)=20
 ENDIT(P1)=1.0E-03 ;ENDIT(V1)=1.0E-03
 ENDIT(W1)=1.0E-03 ;ENDIT(H1)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(P1,LINRLX,1.)
 RELAX(V1,FALSDT,1.)
 RELAX(W1,FALSDT,1.)
 RELAX(H1,FALSDT,1.0E+09)
 RELAX(PRPS,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(W1)=1.0E+06 ;VARMIN(W1)=-1.0E+06
 VARMAX(H1)=1.0E+10 ;VARMIN(H1)=-1.0E+10
 VARMAX(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 ISG62 = 1
 SPEDAT(SET,DOMAIN,PHASE_1_MAT,I,0)
 ************************************************************
  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(V1,Y,Y,Y,Y,Y,Y)
 OUTPUT(W1,Y,Y,Y,Y,Y,Y)
 OUTPUT(H1,Y,N,Y,Y,Y,Y)
 OUTPUT(PRPS,Y,N,Y,N,N,N)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 1 ;IYMON = 5 ;IZMON = 1
 NPRMON = 30 ;NPRMNT = 1 ;TSTSWP = 5
 UWATCH = T ;USTEER = T
 HIGHLO = F
 ************************************************************
  Group 23.Field Print-Out & Plot Control
 NPRINT = 100000 ;NUMCLS = 5
 NYPRIN = 2 ;IYPRF = 1 ;IYPRL = 10000
 NZPRIN = 10 ;IZPRF = 1 ;IZPRL = 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
 
 PATCH(EXIT ,PROFIL, 1, 1, 1, 20, 20, 20, 1, 1)
 PLOT(EXIT ,W1 ,0. ,0. )
 PLOT(EXIT ,H1 ,0. ,0. )
 ************************************************************
  Group 24. Dumps For Restarts
 SAVE = T ;NOWIPE = F
 NSAVE =CHAM
 IDISPA = 1 ;IDISPB = 0 ;IDISPC = 0
STOP