TALK=T;RUN(1,1) PHOTON USE p msg ****************************************************** msg * Note: * msg * ======== * msg * Inspect the result file of d_priv1 to see the * msg * numerical data. * msg ****************************************************** MSG Press E to end ENDUSE DISPLAY Zero-dimensional diffusion problem which can be tested against exact solution. ================================================================= Unsteady dispersal problem: dF/dt=exp(t)-5F Initial conditions: t=0, F=1 Exact solution: F=1./6.(exp(t)+5.exp(-5t)) ================================================================== One computational cell is used in this study of the time variation of pollutant concentration. ENDDIS PLANTBEGIN PATCH(SOURCE,CELL,1,NX,1,NY,1,1,1,lstep)VAL=EXP(TIM)/5. COVAL(SOURCE,C1,5.,GRND) * Exact solution for output STORE(EXCT) EXCT=1./6*(EXP(TIM)+5.*EXP(-5.*TIM)) PLANTEND ************************************************************ Group 1. Run Title and Number ************************************************************ ************************************************************ TEXT(In-Form equivalent of PLANT case Z111 ) ************************************************************ ************************************************************ IRUNN = 1 ;LIBREF = 711 ************************************************************ Group 2. Time dependence STEADY = F * Set overall time and no. of steps TFIRST =0. ;TLAST =1. FSTEP = 1 ;LSTEP = 12 TFRAC(1)=0.083333 ;TFRAC(2)=0.166667 TFRAC(3)=0.25 ;TFRAC(4)=0.333333 TFRAC(5)=0.416667 ;TFRAC(6)=0.5 TFRAC(7)=0.583333 ;TFRAC(8)=0.666667 TFRAC(9)=0.75 ;TFRAC(10)=0.833333 TFRAC(11)=0.916667 ;TFRAC(12)=1. ************************************************************ Group 3. X-Direction Grid Spacing CARTES = T NX = 1 XULAST =1. XFRAC(1)=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(16)=C1 ;NAME(150)=EXCT * Y in SOLUTN argument list denotes: * 1-stored 2-solved 3-whole-field * 4-point-by-point 5-explicit 6-harmonic averaging SOLUTN(C1,Y,Y,N,N,N,Y) SOLUTN(EXCT,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(C1,N,N,N,Y,Y,N) 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 =0. ;PRESS0 =0. DVO1DT =0. ;DRH1DP =0. EMISS =0. ;SCATT =0. RADIA =0. ;RADIB =0. ENUL =1.0E-05 ;ENUT =0. CP1 =1. ;CP2 =1. ************************************************************ Group 10.Inter-Phase Transfer Processes ************************************************************ Group 11.Initial field variables (PHIs) FIINIT(C1)=1. ;FIINIT(EXCT)=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(SOURCE ,CELL , 1, 1, 1, 1, 1, 1, 1, 12) COVAL(SOURCE ,C1 ,0. ,0. ) PATCH(ISOURCE ,CELL , 1, 1, 1, 1, 1, 1, 1, 12) COVAL(ISOURCE ,C1 ,In-Form:source - see Grp 19) XCYCLE = F EGWF = T WALLCO = GRND2 ************************************************************ Group 14. Downstream Pressure For PARAB ************************************************************ Group 15. Terminate Sweeps LSWEEP = 7 ;ISWC1 = 1 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1 SELREF = T RESFAC =1.0E-05 ************************************************************ Group 16. Terminate Iterations LITER(C1)=20 ENDIT(C1)=1.0E-03 ************************************************************ Group 17. Relaxation RELAX(C1,FALSDT,10.) RELAX(EXCT,LINRLX,1.) OVRRLX =0. EXPERT = F ;NNORSL = F ************************************************************ Group 18. Limits VARMAX(C1)=1.0E+10 ;VARMIN(C1)=-1.0E+10 VARMAX(EXCT)=1.0E+10 ;VARMIN(EXCT)=-1.0E+10 ************************************************************ Group 19. Data transmitted to GROUND PARSOL = F ISG62 = 1 SPEDAT(SET,GXMONI,TRANSIENT,L,F) SPEDAT(SET,SOURCE,C1!ISOURCE,C,=EXP(TIM)-5.*C1) SPEDAT(SET,STORED,EXCT,C,=1./6*(EXP(TIM)+5.*EXP(-5.*TIM))!ZSLFIN) SPEDAT(SET,GXMONI,PLOTALL,L,T) ************************************************************ Group 20. Preliminary Printout DISTIL = T ;NULLPR = F NDST = 0 DSTTOL =1.0E-02 EX(C1)=0.4695 ;EX(EXCT)=0.4587 ************************************************************ 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(C1,Y,N,Y,Y,Y,Y) OUTPUT(EXCT,Y,N,Y,N,N,N) ************************************************************ Group 22. Monitor Print-Out IXMON = 1 ;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 NTPRIN = 100000 ;ISTPRF = 1 ;ISTPRL = 100000 IPLTF = 1 ;IPLTL = -1 ;NPLT = -1 ISWPRF = 1 ;ISWPRL = 100000 ITABL = 3 ;IPROF = 2 ABSIZ =0.5 ;ORSIZ =0.4 NTZPRF = 1 ;NCOLPF = 50 ICHR = 2 ;NCOLCO = 45 ;NROWCO = 20 PATCH(TIMEPLOT,PROFIL, 1, 1, 1, 1, 1, 1, 1, 12) PLOT(TIMEPLOT,C1 ,0. ,1. ) PLOT(TIMEPLOT,EXCT,0. ,1. ) ************************************************************ Group 24. Dumps For Restarts SAVE = T ;NOWIPE = F NSAVE =CHAM STOP