TALK=T;RUN(1,1) DISPLAY This simple CHEMKIN test problem concerns the 1d flow of H2 into a duct and its subsequent dissociation into H. For demonstration purposes, species diffusion is absent and the calculation is performed at a constant temperature of 300K. The operating pressure is 1 atmosphere. As with all CHEMKIN calculations, cgs units are used. A linear reaction rate is defined for H2=>2H in the file REAC.CKM, i.e. SH2=-WH2*Kf*XH2 and SH=+WH*2.*Kf*XH2 where: Kf=10.0 s^-1, Wk is the molecular mass of species k, and Xk is the molar concentration of species k in mol/cm^3. Note Xk=RHO*Yk/Wk where RHO is the mixture density in g/cm^3 and Yk is the mass fraction of species k. The run is set up so that the default calculation is performed with the CHEMKIN TWOPNT point- by-point (PBP) solver, although for testing purposes the option exists to select the PHOENICS PBP solver. ENDDIS ************************************************************ Group 1. Run Title and Number ************************************************************ ************************************************************ TEXT(1DX Simple H2=>2H Reaction Test Case ) ************************************************************ ************************************************************ IRUNN = 1 ;LIBREF = 14 ************************************************************ Group 2. Time dependence STEADY = T ************************************************************ Group 3. X-Direction Grid Spacing CARTES = T NX = 10 XULAST =1. 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 = 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 = T NAME(1)=P1 ;NAME(3)=U1 NAME(16)=H2 ;NAME(17)=H NAME(18)=N2 ;NAME(148)=ELN NAME(149)=ELH ;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,N,N,N,Y) SOLUTN(U1,Y,Y,N,N,N,Y) SOLUTN(H2,Y,Y,N,N,N,Y) SOLUTN(H,Y,Y,N,N,N,Y) SOLUTN(N2,Y,N,N,N,N,Y) SOLUTN(ELN,Y,N,N,N,N,Y) SOLUTN(ELH,Y,N,N,N,N,Y) SOLUTN(DEN1,Y,N,N,N,N,Y) DEN1 = 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(U1,Y,Y,Y,Y,Y,Y) TERMS(H2,N,Y,N,Y,Y,Y) TERMS(H,N,Y,N,Y,N,Y) DIFCUT =0.5 ;ZDIFAC =1. GALA = F ;ADDDIF = F NEWRH1 = 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 = GRND9 ;TMP1 =0. ;EL1 =0. TSURR =0. ;TEMP0 =300. ;PRESS0 =0. DVO1DT =0. ;DRH1DP =0. RHO1A =0. ;RHO1B =0. ;RHO1C =0. EMISS =0. ;SCATT =0. RADIA =0. ;RADIB =0. ENUL =1.0E-05 ;ENUT =0. PRNDTL(U1)=1. PRT(U1)=1. CP1 =1. ;CP2 =1. ************************************************************ Group 10.Inter-Phase Transfer Processes ************************************************************ Group 11.Initial field variables (PHIs) FIINIT(P1)=1.0E-10 ;FIINIT(U1)=1. FIINIT(H2)=1. ;FIINIT(H)=0. FIINIT(N2)=0. ;FIINIT(ELN)=1.0E-10 FIINIT(ELH)=1.0E-10 ;FIINIT(DEN1)=1.0E-10 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(NOCPCKIN,WEST , 1, 1, 1, 1, 1, 1, 1, 1) COVAL(NOCPCKIN,P1 , FIXFLU , GRND9 ) COVAL(NOCPCKIN,U1 ,0. ,1. ) COVAL(NOCPCKIN,H2 ,0. ,1. ) COVAL(NOCPCKIN,H ,0. ,0. ) PATCH(OUTFLOW ,EAST , 10, 10, 1, 1, 1, 1, 1, 1) COVAL(OUTFLOW ,P1 ,1000. ,0. ) COVAL(OUTFLOW ,U1 ,0. ,0. ) COVAL(OUTFLOW ,H2 ,0. , SAME ) COVAL(OUTFLOW ,H ,0. , SAME ) XCYCLE = F EGWF = T WALLCO = GRND2 ************************************************************ Group 14. Downstream Pressure For PARAB ************************************************************ Group 15. Terminate Sweeps LSWEEP = 15 ;ISWC1 = 1 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1 SELREF = T RESFAC =1.0E-05 ************************************************************ Group 16. Terminate Iterations LITER(P1)=20 ;LITER(U1)=10 LITER(H2)=20 ;LITER(H)=20 ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03 ENDIT(H2)=1.0E-10 ;ENDIT(H)=1.0E-10 ************************************************************ Group 17. Relaxation RELAX(P1,LINRLX,1.) RELAX(U1,FALSDT,1.) RELAX(H2,FALSDT,1.) RELAX(H,FALSDT,1.) RELAX(N2,LINRLX,1.) RELAX(ELN,LINRLX,1.) RELAX(ELH,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(H2)=1. ;VARMIN(H2)=0. VARMAX(H)=1. ;VARMIN(H)=0. VARMAX(N2)=1. ;VARMIN(N2)=0. VARMAX(ELN)=1.0E+10 ;VARMIN(ELN)=-1.0E+10 VARMAX(ELH)=1.0E+10 ;VARMIN(ELH)=-1.0E+10 VARMAX(DEN1)=1.0E+10 ;VARMIN(DEN1)=-1.0E+10 ************************************************************ Group 19. Data transmitted to GROUND PARSOL = F CHMKIN = T ISG62 = 1 CHSOA = GRND9 ;CHSOB =16. CHSOC =1. CSG4 ='reac' SPEDAT(SET,CHEM,CONTEM,L,T) 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(H2,Y,N,Y,Y,Y,Y) OUTPUT(H,Y,N,Y,Y,Y,Y) OUTPUT(N2,Y,N,Y,N,N,N) OUTPUT(ELN,Y,N,Y,N,N,N) OUTPUT(ELH,Y,N,Y,N,N,N) OUTPUT(DEN1,Y,N,Y,N,N,N) ************************************************************ Group 22. Monitor Print-Out IXMON = 9 ;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 = 3 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