TALK=T;RUN(1,1)
  DISPLAY

  COUNTER-FLOW HEAT EXCHANGER

  2-dimensional (y-z), polar, steady, elliptic simulation


  This case simulates a flow in a cylinder with a heated wall and a
  central tube containing a different, colder fluid flowing in the
  opposite direction. The geometry of the problem is sketched below.

          +----------------------------------+
          |      _    ____shroud________     |
   outlet2|     | |  |__________________|    |             y ^
        <----   | |\plate                  <---- inlet2      |
           __________________________________                +---->
  inlet1  |__________________________________|tube               z
      ---->                                -----> outlet1
          +----------------------------------+

  enddis
  PHOTON USE
  P






  gr ou x 1
  gr ou x 1 y 4 4
  gr ou x 1 z 4 4 y 5 8
  gr ou x 1 y 10 10 z 7 17
  msg The geometry
  msg Press  to continue
  pause
  vec x 1 sh
  msg The flow field
  msg Press  to continue
  pause
  con tem1 x 1 sh; Int 30
  msg Temperature contours
  msg Press  to continue
  pause
  con cl; Vec cl; Red
  set con sca pl
  con tem1 x 1 y 1 3 sh; Int 20
  msg Temperature in the inner tube
  msg Press  to continue
  pause
  con cl; Red
  con tem1 x 1 y 5 m sh; Int 20
  msg Temperature in the outer region
  msg Press  to continue
  pause
  con cl
  mir y
  up z
  con tem1 x 1 y 5 m fi;.01
  con tem1 x 1 y 1 3 fi;.01
  gr ou x 1
  gr ou x 1 y 4 4
  gr ou x 1 z 4 4 y 5 8
  gr ou x 1 y 10 10 z 7 17
  msg The full geometry
  msg Press  to continue
  pause
  vec x 1
  msg Press e to END
  enduse
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(Counter Flow Demo                       )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 0
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = F
 NX = 1
 XULAST =1.0E-02
 XFRAC(1)=1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 15
 YVLAST =1.
 YFRAC(1)=0.066667 ;YFRAC(2)=0.133333
 YFRAC(3)=0.2 ;YFRAC(4)=0.22
 YFRAC(5)=0.286667 ;YFRAC(6)=0.353333
 YFRAC(7)=0.42 ;YFRAC(8)=0.47
 YFRAC(9)=0.5 ;YFRAC(10)=0.52
 YFRAC(11)=0.616 ;YFRAC(12)=0.712
 YFRAC(13)=0.808 ;YFRAC(14)=0.904
 YFRAC(15)=1.
 ************************************************************
  Group 5. Z-Direction Grid Spacing
 PARAB = F
 NZ = 20
 ZWLAST =3.
 ZFRAC(1)=0.044444 ;ZFRAC(2)=0.088889
 ZFRAC(3)=0.133333 ;ZFRAC(4)=0.15
 ZFRAC(5)=0.208333 ;ZFRAC(6)=0.266667
 ZFRAC(7)=0.321212 ;ZFRAC(8)=0.375758
 ZFRAC(9)=0.430303 ;ZFRAC(10)=0.484848
 ZFRAC(11)=0.539394 ;ZFRAC(12)=0.593939
 ZFRAC(13)=0.648485 ;ZFRAC(14)=0.70303
 ZFRAC(15)=0.757576 ;ZFRAC(16)=0.812121
 ZFRAC(17)=0.866667 ;ZFRAC(18)=0.911111
 ZFRAC(19)=0.955556 ;ZFRAC(20)=1.
 ************************************************************
  Group 6. Body-Fitted Coordinates
 ************************************************************
  Group 7. Variables: STOREd,SOLVEd,NAMEd
 ONEPHS = T
 NAME(1)=P1 ;NAME(5)=V1
 NAME(7)=W1 ;NAME(146)=ENUL
 NAME(147)=BLOK ;NAME(148)=PRPS
 NAME(149)=DEN1 ;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,Y,N,N,Y)
 SOLUTN(V1,Y,Y,Y,N,N,Y)
 SOLUTN(W1,Y,Y,Y,N,N,Y)
 SOLUTN(ENUL,Y,N,N,N,N,Y)
 SOLUTN(BLOK,Y,N,N,N,N,Y)
 SOLUTN(PRPS,Y,N,N,N,N,Y)
 SOLUTN(DEN1,Y,N,N,N,N,Y)
 SOLUTN(TEM1,Y,Y,Y,N,N,Y)
 DEN1 = 149
 VISL = 146
 IVARBK = -1 ;ISOLBK = 1
 PRNITS= F ;OPTRLX= F ;NOSIP= F ;ALLVBC= F
 DBSOLV= F ;IMPINI= F ;EARL1D= F
 PRPS = 148
 ************************************************************
  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(TEM1,N,Y,Y,Y,Y,Y)
 DIFCUT =0.5 ;ZDIFAC =1.
 GALA = F ;ADDDIF = F
 ISOLX = 0 ;ISOLY = 0 ;ISOLZ = 0
 ************************************************************
  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 =1.0E+05
 DVO1DT =0. ;DRH1DP =0.
 EMISS =0. ;SCATT =0.
 RADIA =0. ;RADIB =0.
 ENUL =1.0E-05 ;ENUT =3.178E-03
 PRNDTL(V1)=1. ;PRNDTL(W1)=1.
 PRNDTL(TEM1)=1.
 PRT(V1)=1. ;PRT(W1)=1.
 PRT(TEM1)=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(ENUL)=1.0E-10
 FIINIT(BLOK)=1. ;FIINIT(PRPS)=0.
 FIINIT(DEN1)=1.0E-10 ;FIINIT(TEM1)=20.
 
 PATCH(SHROU ,INIVAL, 1, 1, 10, 10, 7, 17, 1, 1)
 INIT(SHROU ,BLOK,0. ,2. )
 INIT(SHROU ,PRPS,0. ,111. )
 
 PATCH(PLTE ,INIVAL, 1, 1, 5, 8, 4, 4, 1, 1)
 INIT(PLTE ,BLOK,0. ,3. )
 INIT(PLTE ,PRPS,0. ,111. )
 
 PATCH(TUBE ,INIVAL, 1, 1, 4, 4, 1, 20, 1, 1)
 INIT(TUBE ,BLOK,0. ,4. )
 INIT(TUBE ,PRPS,0. ,111. )
 
 PATCH(FLUID ,INIVAL, 1, 1, 1, 3, 1, 20, 1, 1)
 INIT(FLUID ,PRPS,0. ,4. )
 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(IN1 ,LOW , 1, 1, 1, 3, 1, 1, 1, 1)
 COVAL(IN1 ,P1 , FIXFLU ,0.69 )
 COVAL(IN1 ,V1 ,0. ,0. )
 COVAL(IN1 ,W1 ,0. ,1. )
 COVAL(IN1 ,TEM1,0. ,20. )
 
 PATCH(IN2 ,HIGH , 1, 1, 5, 7, 20, 20, 1, 1)
 COVAL(IN2 ,P1 , FIXFLU ,11.89 )
 COVAL(IN2 ,V1 ,0. ,0. )
 COVAL(IN2 ,W1 ,0. ,-10. )
 COVAL(IN2 ,TEM1,0. ,100. )
 
 PATCH(OUT1 ,HIGH , 1, 1, 1, 3, 20, 20, 1, 1)
 COVAL(OUT1 ,P1 ,1000. ,0. )
 COVAL(OUT1 ,V1 ,0. ,0. )
 COVAL(OUT1 ,W1 ,0. ,0. )
 COVAL(OUT1 ,TEM1,0. ,0. )
 
 PATCH(OUT2 ,LOW , 1, 1, 5, 10, 1, 1, 1, 1)
 COVAL(OUT2 ,P1 ,1000. ,0. )
 COVAL(OUT2 ,V1 ,0. ,0. )
 COVAL(OUT2 ,W1 ,0. ,0. )
 COVAL(OUT2 ,TEM1,0. ,0. )
 
 PATCH(WALL ,NWALL , 1, 1, 15, 15, 1, 20, 1, 1)
 COVAL(WALL ,W1 , GRND2 ,0. )
 COVAL(WALL ,TEM1, GRND2 ,50. )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 50 ;ISWC1 = 1
 LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =1.0E-03
 ************************************************************
  Group 16. Terminate Iterations
 LITER(P1)=20 ;LITER(V1)=10
 LITER(W1)=10 ;LITER(TEM1)=20
 ENDIT(P1)=1.0E-03 ;ENDIT(V1)=1.0E-03
 ENDIT(W1)=1.0E-03 ;ENDIT(TEM1)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(P1,LINRLX,1.)
 RELAX(V1,FALSDT,0.1)
 RELAX(W1,FALSDT,0.1)
 RELAX(ENUL,LINRLX,1.)
 RELAX(BLOK,LINRLX,1.)
 RELAX(PRPS,LINRLX,1.)
 RELAX(DEN1,LINRLX,1.)
 RELAX(TEM1,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(ENUL)=1.0E+10 ;VARMIN(ENUL)=-1.0E+10
 VARMAX(BLOK)=1.0E+10 ;VARMIN(BLOK)=-1.0E+10
 VARMAX(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10
 VARMAX(DEN1)=1.0E+10 ;VARMIN(DEN1)=-1.0E+10
 VARMAX(TEM1)=1.0E+10 ;VARMIN(TEM1)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 ISG62 = 1
 SPEDAT(SET,MATERIAL,0,L,T)
 SPEDAT(SET,MATERIAL,111,L,T)
 SPEDAT(SET,MATERIAL,4,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,Y,Y,Y,Y,Y)
 OUTPUT(V1,Y,Y,Y,Y,Y,Y)
 OUTPUT(W1,Y,Y,Y,Y,Y,Y)
 OUTPUT(ENUL,Y,N,Y,N,N,N)
 OUTPUT(BLOK,Y,N,Y,N,N,N)
 OUTPUT(PRPS,Y,N,Y,N,N,N)
 OUTPUT(DEN1,Y,N,Y,N,N,N)
 OUTPUT(TEM1,Y,N,Y,Y,Y,Y)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 1 ;IYMON = 7 ;IZMON = 15
 NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -1
 UWATCH = T ;USTEER = T
 HIGHLO = F
 ************************************************************
  Group 23.Field Print-Out & Plot Control
 NPRINT = 100000 ;NUMCLS = 5
 NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10000
 NZPRIN = -1 ;IZPRF = 1 ;IZPRL = 10000
 XZPR = F ;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
   No PATCHes yet used for this Group
 ************************************************************
  Group 24. Dumps For Restarts
 SAVE = T ;NOWIPE = F
 NSAVE =CHAM
STOP