TALK=T;RUN(1,1) PHOTON USE p phi msg BLUFF BODY AERODYNAMICS: FLOW AROUND A CHIMNEY msg view 1 -1 1 norm msg Pressure contours: con p1 y 1 fi;.01;gr ou y 1 con p1 y 3 fi;.01;gr ou y 3 con p1 y 5 fi;.01;gr ou y 5 con p1 y 7 fi;.01;gr ou y 7 msg msg Pressto continue pause cl msg Velocity vectors: vec x 1 sh;gr ou x 1 vec z 1 sh;gr ou z 1 vec y max sh;gr ou y max msg msg Press to continue pause view x norm msg A two-dimensional view of the streamwise velocity vectors: msg msg msg Press e to END enduse DISPLAY This run examines how the flow around a chimney intermingles with the effluent from it. A concentration equation is solved so as to determine the rate of dilution of the effluent. Interesting variants include:- changes to the chimney shape; changes to the flow rate through the chimney top; and changes to the wind velocity. ENDDIS ************************************************************ Group 1. Run Title and Number ************************************************************ ************************************************************ TEXT(Flow Around A Chimney ) ************************************************************ ************************************************************ IRUNN = 1 ;LIBREF = 14 ************************************************************ Group 2. Time dependence STEADY = T ************************************************************ Group 3. X-Direction Grid Spacing CARTES = T NX = 10 XULAST =50. XFRAC(1)=0.02 ;XFRAC(4)=0.128889 XFRAC(7)=0.455556 ;XFRAC(10)=1. ************************************************************ Group 4. Y-Direction Grid Spacing NY = 10 YVLAST =50. YFRAC(1)=0.1 ;YFRAC(4)=0.4 YFRAC(7)=0.7 ;YFRAC(10)=1. ************************************************************ Group 5. Z-Direction Grid Spacing PARAB = F NZ = 10 ZWLAST =50. ZFRAC(1)=0.02 ;ZFRAC(4)=0.079184 ZFRAC(7)=0.366939 ;ZFRAC(10)=1. ************************************************************ Group 6. Body-Fitted Coordinates ************************************************************ Group 7. Variables: STOREd,SOLVEd,NAMEd ONEPHS = T NAME(1)=P1 ;NAME(3)=U1 NAME(5)=V1 ;NAME(7)=W1 NAME(16)=C1 ;NAME(149)=PRPS * 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(W1,Y,Y,N,N,N,Y) SOLUTN(C1,Y,Y,N,N,N,Y) SOLUTN(PRPS,Y,N,N,N,N,N) PRPS = 149 ************************************************************ 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(W1,Y,Y,Y,Y,Y,Y) TERMS(C1,N,Y,Y,Y,Y,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 =0. ;PRESS0 =0. DVO1DT =0. ;DRH1DP =0. EMISS =0. ;SCATT =0. RADIA =0. ;RADIB =0. ENUL =1.0E-02 ;ENUT =0. PRNDTL(U1)=1. ;PRNDTL(V1)=1. PRNDTL(W1)=1. ;PRNDTL(C1)=1. PRT(U1)=1. ;PRT(V1)=1. PRT(W1)=1. ;PRT(C1)=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(W1)=5. FIINIT(C1)=1.0E-10 ;FIINIT(PRPS)=-1. PATCH(CHIMNRES,INIVAL, 1, 1, 1, 5, 2, 3, 1, 1) INIT(CHIMNRES,PRPS,0. ,199. ) 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(UPWIND ,LOW , 1, 10, 1, 10, 1, 1, 1, 1) COVAL(UPWIND ,P1 , FIXFLU ,5. ) COVAL(UPWIND ,U1 ,0. ,0. ) COVAL(UPWIND ,V1 ,0. ,0. ) COVAL(UPWIND ,W1 ,0. ,5. ) COVAL(UPWIND ,C1 ,0. ,0. ) PATCH(DOWNWIND,HIGH , 1, 10, 1, 10, 10, 10, 1, 1) COVAL(DOWNWIND,P1 ,1. ,0. ) COVAL(DOWNWIND,U1 ,0. ,0. ) COVAL(DOWNWIND,V1 ,0. ,0. ) COVAL(DOWNWIND,W1 ,0. ,0. ) PATCH(CHIMNTOP,CELL , 1, 1, 6, 6, 2, 3, 1, 1) COVAL(CHIMNTOP,P1 , FIXFLU ,1. ) COVAL(CHIMNTOP,U1 ,0. ,1. ) COVAL(CHIMNTOP,V1 ,0. ,1. ) COVAL(CHIMNTOP,W1 ,0. ,1. ) COVAL(CHIMNTOP,C1 ,0. ,1. ) 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(U1)=10 LITER(V1)=10 ;LITER(W1)=10 LITER(C1)=20 ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03 ENDIT(V1)=1.0E-03 ;ENDIT(W1)=1.0E-03 ENDIT(C1)=1.0E-03 ************************************************************ Group 17. Relaxation RELAX(P1,LINRLX,1.) RELAX(U1,FALSDT,0.1) RELAX(V1,FALSDT,0.1) RELAX(W1,FALSDT,0.1) RELAX(C1,FALSDT,1.0E+09) RELAX(PRPS,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(W1)=1.0E+06 ;VARMIN(W1)=-1.0E+06 VARMAX(C1)=1.0E+10 ;VARMIN(C1)=-1.0E+10 VARMAX(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10 ************************************************************ Group 19. Data transmitted to GROUND PARSOL = F ISG62 = 1 SPEDAT(SET,GXMONI,PLOTALL,L,T) SPEDAT(SET,MATERIAL,199,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(V1,Y,N,Y,Y,Y,Y) OUTPUT(W1,Y,N,Y,Y,Y,Y) OUTPUT(C1,Y,N,Y,Y,Y,Y) OUTPUT(PRPS,Y,N,Y,N,N,N) ************************************************************ Group 22. Monitor Print-Out IXMON = 1 ;IYMON = 5 ;IZMON = 5 NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -1 UWATCH = T ;USTEER = T HIGHLO = F ************************************************************ Group 23.Field Print-Out & Plot Control NPRINT = 100000 ;NUMCLS = 5 NXPRIN = 3 ;IXPRF = 1 ;IXPRL = 10000 NYPRIN = 3 ;IYPRF = 5 ;IYPRL = 5 NZPRIN = 3 ;IZPRF = 1 ;IZPRL = 10000 XZPR = T ;YZPR = F 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 PATCH(ZEQUS5 ,CONTUR, 2, 7, 2, 7, 5, 5, 1, 1) PLOT(ZEQUS5 ,U1 ,0. ,20. ) PLOT(ZEQUS5 ,V1 ,0. ,20. ) PLOT(ZEQUS5 ,W1 ,0. ,20. ) PLOT(ZEQUS5 ,C1 ,0. ,20. ) PATCH(PLUME ,PROFIL, 1, 1, 5, 5, 1, 10, 1, 1) PLOT(PLUME ,W1 ,0. ,6. ) PLOT(PLUME ,C1 ,0. ,0.1 ) PATCH(XEQUS1 ,CONTUR, 1, 1, 1, 10, 1, 10, 1, 1) PLOT(XEQUS1 ,U1 ,0. ,20. ) PLOT(XEQUS1 ,V1 ,0. ,20. ) PLOT(XEQUS1 ,W1 ,0. ,20. ) PLOT(XEQUS1 ,C1 ,0. ,20. ) PATCH(YEQUS5 ,CONTUR, 1, 10, 5, 5, 1, 10, 1, 1) PLOT(YEQUS5 ,U1 ,0. ,20. ) PLOT(YEQUS5 ,V1 ,0. ,20. ) PLOT(YEQUS5 ,W1 ,0. ,20. ) PLOT(YEQUS5 ,C1 ,0. ,50. ) ************************************************************ Group 24. Dumps For Restarts SAVE = T ;NOWIPE = F NSAVE =CHAM STOP