TALK=T;RUN(1,1) PHOTON USE p p2 10 1 view x norm gr ou x 1 msg Velocity vectors - time=1 sec vec x 1 sh msg msg Pressto continue pause vec off;red msg Pressure distribution - time=1 sec con p1 x 1 fi;.01 msg msg Press to continue pause con off;red msg Temperature distribution - Prandtl number 0.7: con h1 x 1 fi;.001 msg Press to continue pause con off;red msg Temperature distribution - Prandtl number 1.0: con a x 1 fi;.001 msg msg Press to continue pause con off;red msg Temperature distribution - Prandtl number 0.1: con b x 1 fi;.001 msg msg Press to see results after increase in flow rate pause p p4 10 1 view x norm gr ou x 1 msg Velocity vectors - time=3 sec vec x 1 sh msg msg Press to continue pause vec off;red msg Pressure distribution - time=3 sec con p1 x 1 fi;.01 msg msg Press to continue pause con off;red msg Temperature distribution - Prandtl number 0.7: con h1 x 1 fi;.001 msg Press to continue pause con off;red msg Temperature distribution - Prandtl number 1.0: con a x 1 fi;.001 msg msg Press to continue pause con off;red msg Temperature distribution - Prandtl number 0.1: con b x 1 fi;.001 msg msg Press e to END enduse DISPLAY This case examines the transient flow in a pipe resulting from an abrupt change in inlet conditions. The uniform inflow is imposed at the inlet, at the start of the calculation. The pipe-wall temperature differs from the initial temperature of the flow. Three extra variables are treated as temperatures with different Prandtl numbers. The development of the transient flow can be studied through changing parameters such as geometry, flow properties and flow rate at the inlet. hot pipe wall //////////////////////////// inlet ----------------------------- ----> uniform inflow exit ----> _________________________axis____________ For a grid-independent solution, smaller grid size is needed. ENDDIS DISPLAY This run performs the same analysis as the preceeding case except that an area restriction is added at half length. hot pipe wall ///////////////////////////////// --------------------------------- ---> - - - - - uniform flow - || - - - - - -> exit at inlet ---> - - - ||obstacle __________ _ ___||____________axis____ ENDDIS ************************************************************ Group 1. Run Title and Number ************************************************************ ************************************************************ TEXT(Central Obstacle In Laminar Pipe ) ************************************************************ ************************************************************ IRUNN = 1 ;LIBREF = 322 ************************************************************ Group 2. Time dependence STEADY = F * Set overall time and no. of steps TFIRST =0. ;TLAST =0.5 FSTEP = 1 ;LSTEP = 5 TFRAC(1)=0.2 ;TFRAC(2)=0.4 TFRAC(3)=0.6 ;TFRAC(4)=0.8 TFRAC(5)=1. ************************************************************ Group 3. X-Direction Grid Spacing CARTES = F NX = 1 XULAST =1. XFRAC(1)=1. ************************************************************ Group 4. Y-Direction Grid Spacing NY = 10 YVLAST =1.0E-02 YFRAC(1)=0.1 ;YFRAC(2)=0.2 YFRAC(3)=0.3 ;YFRAC(4)=0.4 YFRAC(5)=0.5 ;YFRAC(6)=0.6 YFRAC(7)=0.7 ;YFRAC(8)=0.8 YFRAC(9)=0.9 ;YFRAC(10)=1. ************************************************************ Group 5. Z-Direction Grid Spacing PARAB = F NZ = 10 ZWLAST =0.5 ZFRAC(1)=0.1 ;ZFRAC(2)=0.2 ZFRAC(3)=0.3 ;ZFRAC(4)=0.4 ZFRAC(5)=0.5 ;ZFRAC(6)=0.6 ZFRAC(7)=0.7 ;ZFRAC(8)=0.8 ZFRAC(9)=0.9 ;ZFRAC(10)=1. ************************************************************ 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(16)=A ;NAME(17)=B NAME(18)=C * 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(V1,Y,Y,N,N,N,Y) SOLUTN(W1,Y,Y,N,N,N,Y) SOLUTN(H1,Y,Y,N,N,N,Y) SOLUTN(A,Y,Y,N,N,N,Y) SOLUTN(B,Y,Y,N,N,N,Y) SOLUTN(C,Y,Y,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(V1,Y,Y,Y,Y,Y,Y) TERMS(W1,Y,Y,Y,Y,Y,Y) TERMS(H1,Y,Y,Y,Y,Y,Y) TERMS(A,N,Y,Y,Y,Y,Y) TERMS(B,N,Y,Y,Y,N,Y) TERMS(C,N,Y,Y,Y,Y,Y) DIFCUT =0.5 ;ZDIFAC =1. GALA = F ;ADDDIF = F HUNIT =1. 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. PRNDTL(V1)=1. ;PRNDTL(W1)=1. PRNDTL(H1)=0.7 ;PRNDTL(A)=1. PRNDTL(B)=0.1 ;PRNDTL(C)=10. PRT(V1)=1. ;PRT(W1)=1. PRT(H1)=1. ;PRT(A)=1. PRT(B)=1. ;PRT(C)=1. CP1 =1. ;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(A)=1.0E-10 ;FIINIT(B)=1.0E-10 FIINIT(C)=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(PIPEW ,NWALL , 1, 1, 10, 10, 1, 10, 1, 5) COVAL(PIPEW ,W1 ,1. ,0. ) COVAL(PIPEW ,H1 ,1.428571 ,1. ) COVAL(PIPEW ,A ,1. ,1. ) COVAL(PIPEW ,B ,10. ,1. ) COVAL(PIPEW ,C ,0.1 ,1. ) PATCH(UNIFORM ,LOW , 1, 1, 1, 10, 1, 1, 1, 2) COVAL(UNIFORM ,P1 , FIXFLU ,0.1 ) COVAL(UNIFORM ,V1 ,0. ,0. ) COVAL(UNIFORM ,W1 ,0. ,0.1 ) COVAL(UNIFORM ,H1 ,0. ,0. ) COVAL(UNIFORM ,A ,0. ,0. ) COVAL(UNIFORM ,B ,0. ,0. ) COVAL(UNIFORM ,C ,0. ,0. ) PATCH(OUTLET ,HIGH , 1, 1, 1, 10, 10, 10, 1, 5) COVAL(OUTLET ,P1 , FIXVAL ,0. ) COVAL(OUTLET ,V1 ,0. ,0. ) COVAL(OUTLET ,W1 ,0. ,0. ) PATCH(RE1000 ,LOW , 1, 1, 1, 10, 1, 1, 3, 5) COVAL(RE1000 ,P1 , FIXFLU ,1. ) COVAL(RE1000 ,V1 ,0. ,0. ) COVAL(RE1000 ,W1 ,0. ,1. ) COVAL(RE1000 ,H1 ,0. ,0. ) COVAL(RE1000 ,A ,0. ,0. ) COVAL(RE1000 ,B ,0. ,0. ) COVAL(RE1000 ,C ,0. ,0. ) PATCH(OBSTC ,HIGH , 1, 1, 1, 6, 5, 5, 1, 5) COVAL(OBSTC ,W1 , FIXVAL ,0. ) XCYCLE = F EGWF = T WALLCO = GRND2 ************************************************************ Group 14. Downstream Pressure For PARAB ************************************************************ Group 15. Terminate Sweeps LSWEEP = 20 ;ISWC1 = 1 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1 SELREF = T RESFAC =1.0E-02 ************************************************************ Group 16. Terminate Iterations LITER(P1)=20 ;LITER(V1)=10 LITER(W1)=10 ;LITER(H1)=20 LITER(A)=20 ;LITER(B)=20 LITER(C)=20 ENDIT(P1)=1.0E-03 ;ENDIT(V1)=1.0E-03 ENDIT(W1)=1.0E-03 ;ENDIT(H1)=1.0E-03 ENDIT(A)=1.0E-03 ;ENDIT(B)=1.0E-03 ENDIT(C)=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(A,FALSDT,1.0E+09) RELAX(B,FALSDT,1.0E+09) RELAX(C,FALSDT,1.0E+09) 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(A)=1.0E+10 ;VARMIN(A)=-1.0E+10 VARMAX(B)=1.0E+10 ;VARMIN(B)=-1.0E+10 VARMAX(C)=1.0E+10 ;VARMIN(C)=-1.0E+10 ************************************************************ Group 19. Data transmitted to GROUND PARSOL = F ISG62 = 1 SPEDAT(SET,GXMONI,TRANSIENT,L,F) 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(V1,Y,N,Y,Y,Y,Y) OUTPUT(W1,Y,N,Y,Y,Y,Y) OUTPUT(H1,Y,N,Y,Y,Y,Y) OUTPUT(A,Y,N,Y,Y,Y,Y) OUTPUT(B,Y,N,Y,Y,Y,Y) OUTPUT(C,Y,N,Y,Y,Y,Y) ************************************************************ Group 22. Monitor Print-Out IXMON = 1 ;IYMON = 5 ;IZMON = 5 NPRMON = 20 ;NPRMNT = 1 ;TSTSWP = -1 UWATCH = T ;USTEER = T HIGHLO = F ************************************************************ Group 23.Field Print-Out & Plot Control NPRINT = 100000 ;NUMCLS = 5 NTPRIN = 1 ;ISTPRF = 1 ;ISTPRL = 100000 NYPRIN = 1 ;IYPRF = 1 ;IYPRL = 10000 NZPRIN = 1 ;IZPRF = 1 ;IZPRL = 10000 XZPR = F ;YZPR = F IPLTF = 1 ;IPLTL = 30 ;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(TIMPLOT1,PROFIL, 1, 1, 1, 10, 9, 9, 1, 5) PLOT(TIMPLOT1,W1 ,0. ,0.2 ) PLOT(TIMPLOT1,A ,0. ,1. ) PLOT(TIMPLOT1,B ,0. ,1. ) PLOT(TIMPLOT1,C ,0. ,1. ) PATCH(TIMPLOT2,CONTUR, 1, 1, 1, 10, 1, 10, 1, 5) PLOT(TIMPLOT2,W1 ,0. ,10. ) PLOT(TIMPLOT2,H1 ,0. ,10. ) PLOT(TIMPLOT2,A ,0. ,10. ) PLOT(TIMPLOT2,B ,0. ,10. ) PLOT(TIMPLOT2,C ,0. ,10. ) PATCH(TIMEPLOT,CONTUR, 1, 1, 1, 10, 1, 10, 1, 5) PLOT(TIMEPLOT,W1 ,0. ,10. ) PLOT(TIMEPLOT,H1 ,0. ,10. ) PLOT(TIMEPLOT,A ,0. ,10. ) PLOT(TIMEPLOT,B ,0. ,10. ) PLOT(TIMEPLOT,C ,0. ,10. ) ************************************************************ Group 24. Dumps For Restarts SAVE = T ;NOWIPE = F NSAVE =CHAM IDISPA = 1 ;IDISPB = 0 ;IDISPC = 0 CSG1 ='P' STOP