TALK=T;RUN(1,1) DISPLAY A simple case to demonstrate the effect of thermal diffusion on the fields of H2 (in C1) and N2 (in C2). The when the temperature gradients are positive, the thermal diffusion acts against the bulk mass-flux and acts to establish a negative gradient in H2 in the cross-flow direction. When the temperature gradient is reversed, the thermal diffusion acts with the bulk mass-flux causing the overall values of H2 to be smaller and a positive gradient to be established in the cross- flow direction. ENDDISPLAY PHOTON USE p phi view z norm gr ou z 1 msg Contours of the temperature cont tem1 z 1 fil;.001 msg msg Pressto continue pause gr ou z 1 msg Contours of the light species (H2) cont h2 z 1 fil;.001 msg msg Press to continue pause msg msg Press e to END enduse ************************************************************ Group 1. Run Title and Number ************************************************************ ************************************************************ TEXT(Thermal Diffusion Test-Case: XY-plane ) ************************************************************ ************************************************************ IRUNN = 1 ;LIBREF = 14 ************************************************************ Group 2. Time dependence STEADY = T ************************************************************ Group 3. X-Direction Grid Spacing CARTES = T NX = 5 XULAST =1. XFRAC(1)=0.2 ;XFRAC(2)=0.4 XFRAC(3)=0.6 ;XFRAC(4)=0.8 XFRAC(5)=1. ************************************************************ Group 4. Y-Direction Grid Spacing NY = 5 YVLAST =1. YFRAC(1)=0.2 ;YFRAC(2)=0.4 YFRAC(3)=0.6 ;YFRAC(4)=0.8 YFRAC(5)=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)=C1 NAME(17)=C2 ;NAME(149)=ELH NAME(150)=TEM1 * 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(V1,Y,Y,N,N,N,Y) SOLUTN(C1,Y,Y,N,N,N,Y) SOLUTN(C2,Y,Y,N,N,N,Y) SOLUTN(ELH,Y,N,N,N,N,Y) SOLUTN(TEM1,Y,N,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(V1,Y,Y,Y,Y,Y,Y) TERMS(C1,N,Y,Y,Y,Y,Y) TERMS(C2,N,Y,Y,Y,N,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. ;TMP1 =0. ;EL1 =0. TSURR =0. ;TEMP0 =300. ;PRESS0 =0. DVO1DT =0. ;DRH1DP =0. EMISS =0. ;SCATT =0. RADIA =0. ;RADIB =0. ENUL =1.0E-05 ;ENUT =0. PRNDTL(U1)=1. ;PRNDTL(V1)=1. PRNDTL(C1)=-GRND9 ;PRNDTL(C2)=-GRND9 PRT(U1)=1. ;PRT(V1)=1. PRT(C1)=1. ;PRT(C2)=1. CP1 =1. ;CP2 =1. ************************************************************ Group 10.Inter-Phase Transfer Processes ************************************************************ Group 11.Initial field variables (PHIs) FIINIT(P1)=1.0E-10 ;FIINIT(U1)=1.0E-10 FIINIT(V1)=1.0E-10 ;FIINIT(C1)=0.5 FIINIT(C2)=0.5 ;FIINIT(ELH)=1.0E-10 FIINIT(TEM1)=1.0E-10 PATCH(WHOLEX ,LINVLX, 1, 5, 1, 5, 1, 1, 1, 1) INIT(WHOLEX ,TEM1,-100. ,0. ) PATCH(WHOLEY ,LINVLY, 1, 5, 1, 5, 1, 1, 1, 1) INIT(WHOLEY ,TEM1,-100. ,0. ) INIADD = T 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(IN1 ,SOUTH , 1, 5, 1, 1, 1, 1, 1, 1) COVAL(IN1 ,P1 , FIXFLU ,0.5 ) COVAL(IN1 ,U1 ,0. ,0. ) COVAL(IN1 ,V1 ,0. ,0.5 ) COVAL(IN1 ,C1 ,0. ,0. ) COVAL(IN1 ,C2 ,0. ,0. ) PATCH(OUT1 ,NORTH , 1, 5, 5, 5, 1, 1, 1, 1) COVAL(OUT1 ,P1 ,1000. ,0. ) COVAL(OUT1 ,U1 ,0. ,0. ) COVAL(OUT1 ,V1 ,0. ,0. ) COVAL(OUT1 ,C1 ,0. , SAME ) COVAL(OUT1 ,C2 ,0. , SAME ) PATCH(H2SO ,CELL , 1, 5, 5, 5, 1, 1, 1, 1) COVAL(H2SO ,C1 , FIXFLU ,2.0E-03 ) XCYCLE = F EGWF = T WALLCO = GRND2 ************************************************************ Group 14. Downstream Pressure For PARAB ************************************************************ Group 15. Terminate Sweeps LSWEEP = 80 ;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(V1)=10 ;LITER(C1)=20 LITER(C2)=20 ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03 ENDIT(V1)=1.0E-03 ;ENDIT(C1)=1.0E-03 ENDIT(C2)=1.0E-03 ************************************************************ Group 17. Relaxation RELAX(P1,LINRLX,1.) RELAX(U1,FALSDT,1.) RELAX(V1,FALSDT,1.) RELAX(C1,FALSDT,1.0E+09) RELAX(C2,FALSDT,1.0E+09) RELAX(ELH,LINRLX,1.) RELAX(TEM1,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(C1)=1.0E+10 ;VARMIN(C1)=-1.0E+10 VARMAX(C2)=1.0E+10 ;VARMIN(C2)=-1.0E+10 VARMAX(ELH)=1.0E+10 ;VARMIN(ELH)=-1.0E+10 VARMAX(TEM1)=1.0E+10 ;VARMIN(TEM1)=-1.0E+10 ************************************************************ Group 19. Data transmitted to GROUND PARSOL = F CHMKIN = T ISG62 = 1 CHSOC =1. CSG4 ='tdif' SPEDAT(SET,GXMONI,PLOTALL,L,T) ************************************************************ Group 20. Preliminary Printout ************************************************************ Group 21. Print-out of Variables INIFLD = T ;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(V1,Y,N,Y,Y,Y,Y) OUTPUT(C1,Y,N,Y,Y,Y,Y) OUTPUT(C2,Y,N,Y,Y,Y,Y) OUTPUT(ELH,Y,N,Y,N,N,N) OUTPUT(TEM1,Y,N,Y,N,N,N) ************************************************************ Group 22. Monitor Print-Out IXMON = 3 ;IYMON = 3 ;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 = 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 No PATCHes yet used for this Group ************************************************************ Group 24. Dumps For Restarts SAVE = T ;NOWIPE = F NSAVE =CHAM STOP