TALK=T;RUN(1,1)
  DISPLAY
  '2-fluid' FLAME SPREAD IN PLANE CHANNEL
  1-dimensional (x), cartesian, steady, elliptic simulation

  This model concerns the turbulent spread of flame
  through a pre-mixed combustible gas flowing steadily
  into a plane-walled duct.

  The first experiments of this kind were reported by
  Williams, Hottel and Scurlock in 1948.

  The major features of the phenomenon are represented
  by the present simple 1D 2-fluid model.

  enddis
  AUTOPLOT USE
  file
  phi 5

  cl
  da 1 1u x 1 9
  da 1 2u x 1 9
  scale
  cole 1
  col8 2
  msg velocity of hot gas - red
  msg velocity of cold gas - green
  msg Press  to continue
  pause
  cl
  da 1 cold
  scale
  col4 1
  msg volume fraction of cold gas
  msg Press e to END
  enduse
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(Flame spread in duct, 1D analysis       )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 14
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  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 =0.025
 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)=HOT
 NAME(10)=COLD ;NAME(150)=MDOT
    * 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(HOT,Y,Y,N,N,N,Y)
 SOLUTN(COLD,Y,Y,N,N,N,Y)
 SOLUTN(MDOT,Y,N,N,N,N,Y)
 INTMDT = 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(1U,Y,Y,Y,Y,Y,Y)
 TERMS(2U,Y,Y,Y,Y,N,Y)
 TERMS(HOT,Y,Y,Y,Y,Y,Y)
 TERMS(COLD,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 =0.2 ;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 =1.0E-05 ;ENUT =0.
 PHINT(1U)=-2.022E+04 ;PHINT(2U)=-2.022E+04
 PHINT(HOT)=-2.022E+04 ;PHINT(COLD)=-2.022E+04
 PRNDTL(1U)=1. ;PRNDTL(2U)=1.
 PRNDTL(HOT)=1. ;PRNDTL(COLD)=1.
 PRT(1U)=1. ;PRT(2U)=1.
 PRT(HOT)=1. ;PRT(COLD)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 CFIPS = GRND2
 RLOLIM =0. ;CMDOT =30.
 CFIPA =1. ;CFIPB =0.
 CFIPC =1. ;CFIPD =0.
 CINT(P1)=1. ;CINT(1U)=1.
 CINT(2U)=1. ;CINT(HOT)=0.
 CINT(COLD)=0.
 PHINT(P1)=-2.022E+04 ;PHINT(1U)=-2.022E+04
 PHINT(2U)=-2.022E+04 ;PHINT(HOT)=-2.022E+04
 PHINT(COLD)=-2.022E+04
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(P1)=10. ;FIINIT(1U)=10.
 FIINIT(2U)=10. ;FIINIT(HOT)=0.1
 FIINIT(COLD)=0.9 ;FIINIT(MDOT)=0.
   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(INLET ,WEST , 1, 1, 1, 1, 1, 1, 1, 1)
 COVAL(INLET ,1U ,0. ,25. )
 COVAL(INLET ,2U ,0. ,10. )
 COVAL(INLET ,HOT , FIXFLU ,0.2 )
 COVAL(INLET ,COLD, FIXFLU ,9. )
 
 PATCH(OUTLET ,CELL , 20, 20, 1, 1, 1, 1, 1, 1)
 COVAL(OUTLET ,1U ,0. ,0. )
 COVAL(OUTLET ,2U ,0. ,0. )
 COVAL(OUTLET ,HOT ,0.2 ,0. )
 COVAL(OUTLET ,COLD,1. ,0. )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 100 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 ISWR1 = 1 ;ISWR2 = 10000
 SELREF = T
 RESFAC =1.0E-06
 ************************************************************
  Group 16. Terminate Iterations
 LITER(P1)=20 ;LITER(1U)=10
 LITER(2U)=10 ;LITER(HOT)=1
 LITER(COLD)=1
 ENDIT(P1)=1.0E-03 ;ENDIT(1U)=1.0E-03
 ENDIT(2U)=1.0E-03 ;ENDIT(HOT)=1.0E-03
 ENDIT(COLD)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(P1,LINRLX,1.)
 RELAX(1U,FALSDT,0.1)
 RELAX(2U,FALSDT,0.1)
 RELAX(HOT,LINRLX,0.6)
 RELAX(COLD,LINRLX,0.6)
 RELAX(MDOT,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(HOT)=1. ;VARMIN(HOT)=1.0E-06
 VARMAX(COLD)=1. ;VARMIN(COLD)=1.0E-06
 VARMAX(MDOT)=1.0E+10 ;VARMIN(MDOT)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 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,N,Y,Y,Y,Y)
 OUTPUT(1U,Y,N,Y,Y,Y,Y)
 OUTPUT(2U,Y,N,Y,Y,Y,Y)
 OUTPUT(HOT,Y,N,Y,Y,Y,Y)
 OUTPUT(COLD,Y,N,Y,Y,Y,Y)
 OUTPUT(MDOT,Y,Y,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
 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(PROFILS ,PROFIL, 1, 20, 1, 1, 1, 1, 1, 1)
 PLOT(PROFILS ,1U ,-1. ,-1. )
 PLOT(PROFILS ,2U ,-1. ,-1. )
 PLOT(PROFILS ,COLD,0. ,1. )
 ************************************************************
  Group 24. Dumps For Restarts
 SAVE = T ;NOWIPE = F
 NSAVE =CHAM
STOP