TALK=T;RUN(1,1) PHOTON USE p; parphi;;; msg PLANE JET msg msg longitudinal-velocity contours and vectors msg - msg Pressto continue gr ou x 1;con wcrt x 1 fi;0.2;vec x 1;pause;vec off;con off;red msg Temperature contours: con temp x 1 fi;0.2; pause; con off;red msg Eddy-viscosity contours: con enut x 1 fi;0.2 msg - msg Press e to END enduse DISPLAY A free turbulent plane jet is formed when fluid emerges steadily from a wide slot into a reservoir of the same fluid at rest. Downstream of a 'development length', of about 8 slot widths, the flow becomes self-similar. In the self-similar region of the jet, both the velocity and temperature half-widths vary in proportion to z, and the centre- line velocity and temperature excess decay as z**(-0.5). The calculations are started at z = 0, where the velocity is supposed to have a "top-hat" shape, with a uniform value from y = 0 to y = half the slot width, and a much smaller value for larger values of y. The grid width and forward step are set to increase linearly with z. ENDDIS PLANTBEGIN DZ=0.1*YVLAST IF(IZ.LE.2) DZ=DZL*(1.-0.02*TEMP[,1,-1]/:TJET:) IF(IZ.GT.2) PLANTEND ************************************************************ Group 1. Run Title and Number ************************************************************ ************************************************************ TEXT(Plane Jet;Mixing Length Model;Para ) ************************************************************ ************************************************************ IRUNN = 1 ;LIBREF = 623 ************************************************************ Group 2. Time dependence STEADY = T ************************************************************ Group 3. X-Direction Grid Spacing CARTES = T NX = 1 XULAST =1. XFRAC(1)=1. ************************************************************ Group 4. Y-Direction Grid Spacing NY = 20 YVLAST =0.1 AZYV =1. ;AZRI =0. ;AZAL =0. Method of pairs used for grid setting. YFRAC(1)=-20. ;YFRAC(2)=0.05 ************************************************************ Group 5. Z-Direction Grid Spacing PARAB = T NZ = 100 ZWADD =0.333333 ZWLAST =1. AZDZ = GRND ZFRAC(1)=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)=TEMP NAME(149)=LEN1 ;NAME(150)=ENUT * 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(TEMP,Y,Y,N,N,N,Y) SOLUTN(LEN1,Y,N,N,N,N,Y) SOLUTN(ENUT,Y,N,N,N,N,Y) VIST = 150 LEN1 = 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(V1,Y,Y,Y,Y,Y,Y) TERMS(W1,Y,Y,Y,Y,Y,Y) TERMS(TEMP,N,Y,Y,Y,Y,Y) DIFCUT =0. ;ZDIFAC =1. GALA = F ;ADDDIF = F NEWENT = 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 =1. ;TMP1 =0. ;EL1 = GRND6 TSURR =0. ;TEMP0 =0. ;PRESS0 =0. DVO1DT =0. ;DRH1DP =0. EMISS =0. ;SCATT =0. RADIA =0. ;RADIB =0. EL1A =0.07 ;EL1B =0.1 ;EL1C =1.0E-02 EL1D =0. ;EL1E =10. ENUL =4.0E-06 ;ENUT = GRND2 ENUTA =0. ;ENUTB =0. ;ENUTC =0. IENUTA = 0 PRNDTL(V1)=1. ;PRNDTL(W1)=1. PRNDTL(TEMP)=1. PRT(V1)=1. ;PRT(W1)=1. PRT(TEMP)=0.65 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(TEMP)=1.0E-10 FIINIT(LEN1)=1.0E-10 ;FIINIT(ENUT)=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(HIGHY ,NORTH , 1, 1, 20, 20, 1, 100, 1, 1) COVAL(HIGHY ,P1 , FIXVAL ,0. ) COVAL(HIGHY ,V1 ,0. ,0. ) COVAL(HIGHY ,W1 ,0. ,0. ) COVAL(HIGHY ,TEMP,0. ,0. ) PATCH(SLOT ,LOW , 1, 1, 1, 10, 1, 1, 1, 1) COVAL(SLOT ,P1 , FIXFLU ,10. ) COVAL(SLOT ,W1 ,0. ,10. ) COVAL(SLOT ,TEMP,0. ,1. ) PATCH(OUTSIDE ,LOW , 1, 1, 11, 20, 1, 1, 1, 1) COVAL(OUTSIDE ,P1 , FIXFLU ,1.0E-02 ) COVAL(OUTSIDE ,W1 ,0. ,1.0E-02 ) COVAL(OUTSIDE ,TEMP,0. ,1. ) XCYCLE = F EGWF = T WALLCO = GRND2 ************************************************************ Group 14. Downstream Pressure For PARAB IPARAB = 1 AZPH =0. ;PBAR =0. ************************************************************ Group 15. Terminate Sweeps LSWEEP = 1 ;ISWC1 = 1 LITHYD = 30 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1 SELREF = T RESFAC =1.0E-05 ************************************************************ Group 16. Terminate Iterations LITER(P1)=20 ;LITER(V1)=10 LITER(W1)=10 ;LITER(TEMP)=20 ENDIT(P1)=1.0E-03 ;ENDIT(V1)=1.0E-03 ENDIT(W1)=1.0E-03 ;ENDIT(TEMP)=1.0E-03 ************************************************************ Group 17. Relaxation RELAX(P1,LINRLX,1.) RELAX(V1,FALSDT,5.0E-03) RELAX(W1,FALSDT,0.1) RELAX(TEMP,FALSDT,1.0E+09) RELAX(LEN1,LINRLX,1.) RELAX(ENUT,LINRLX,1.) 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(TEMP)=1.0E+10 ;VARMIN(TEMP)=-1.0E+10 VARMAX(LEN1)=1.0E+10 ;VARMIN(LEN1)=-1.0E+10 VARMAX(ENUT)=1.0E+10 ;VARMIN(ENUT)=-1.0E+10 ************************************************************ Group 19. Data transmitted to GROUND NAMSAT =MOSG DWDY = T PARSOL = F DZW1 =0.1 ISG62 = 1 SPEDAT(SET,GXMONI,PLOTALL,L,T) ************************************************************ Group 20. Preliminary Printout DISTIL = T ;NULLPR = F NDST = 0 DSTTOL =1.0E-02 EX(P1)=0.1865 ;EX(V1)=0.3883 EX(W1)=3.507 ;EX(TEMP)=0.3795 EX(LEN1)=0.02228 ;EX(ENUT)=0.01811 ************************************************************ 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,Y,Y,Y,Y,Y) OUTPUT(V1,Y,Y,Y,Y,Y,Y) OUTPUT(W1,Y,Y,Y,Y,Y,Y) OUTPUT(TEMP,Y,Y,Y,Y,Y,Y) OUTPUT(LEN1,Y,N,Y,N,N,N) OUTPUT(ENUT,Y,N,Y,N,N,N) ************************************************************ Group 22. Monitor Print-Out IXMON = 1 ;IYMON = 1 ;IZMON = 10 NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -5 UWATCH = T ;USTEER = T HIGHLO = F ************************************************************ Group 23.Field Print-Out & Plot Control NPRINT = 100000 ;NUMCLS = 5 NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10000 NZPRIN = 100 ;IZPRF = 1 ;IZPRL = 10000 IPLTF = 1 ;IPLTL = 30 ;NPLT = 1 ISWPRF = 1 ;ISWPRL = 100000 ITABL = 1 ;IPROF = 1 ABSIZ =0.5 ;ORSIZ =0.4 NTZPRF = 1 ;NCOLPF = 50 ICHR = 2 ;NCOLCO = 45 ;NROWCO = 20 PATCH(IZEQNZ ,PROFIL, 1, 1, 1, 20, 100, 100, 1, 1) PLOT(IZEQNZ ,W1 ,0. ,0. ) PLOT(IZEQNZ ,TEMP,0. ,0. ) PLOT(IZEQNZ ,ENUT,0. ,0. ) PATCH(IYEQ1 ,PROFIL, 1, 1, 1, 1, 1, 100, 1, 1) PLOT(IYEQ1 ,W1 ,0. ,0. ) PLOT(IYEQ1 ,TEMP,0. ,0. ) PLOT(IYEQ1 ,ENUT,0. ,0. ) ************************************************************ Group 24. Dumps For Restarts SAVE = T ;NOWIPE = F NSAVE =CHAM IDISPA = 5 ;IDISPB = 1 ;IDISPC = 100 STOP