TALK=T;RUN(1,1)
DISPLAY
Cases 110 to 114 illustrate how "porosity" values may be used
to introduce not only geometrical data, but also variations in
thermal conductivity, specific heat and heat-transfer coeff.
In case 110, the cross-section and other properties are uniform.
Subsequent cases introduce non-uniformities, by way of porosity,
one by one. A sketch of the geometry for case 110 follows:
/--/|
/**/ |
/**/ |
/**/ |
/**/ <------- surface in contact with
|--| | ^ surrounding fluid
|**| | | at temperature = 0.0
|**| | |x
|**| | |
///// |**| //////////////////////////////////
////// |**| //////////////////////////////////
/////// |**| ////// base at temperature = 1.0 /
//////// |**| //////////////////////////////////
///////// |--|//////////////////////////////////
y---->
That it is possible to act in this way does not mean that it
is necessary or even recommended.
These cases were very early entries to the library, and have be$
en
retained for historical interest. However, the treatment of H1
as though it represented temperature is valid only for a
constant specific heat; and, in the final case of the series,
the specific heat is supposed to vary.
Nowadays, use of TEM1 is recommended rather than H1; and In-Form
provides a much more convenient way of introducing variations of
properties and boundary conditions.
ENDDIS
DISPLAY
This is case 110, but with the fin tapering from its full
thickness at x=0 to zero at x=XULAST.
This is effected through EPOR and VPOR settings.
ENDDIS
DISPLAY
In addition to the taper of case 111, the material changes at
x=XULAST/2.
Here the thermal-conductivity change, from COND1 to COND2, is
effected by changing the area porosity.
ENDDIS
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************
TEXT(Fin Non-Uniform Conductivity )
************************************************************
************************************************************
IRUNN = 1 ;LIBREF = 111
************************************************************
Group 2. Time dependence
STEADY = F
* Set overall time and no. of steps
TFIRST =0. ;TLAST =20.
FSTEP = 1 ;LSTEP = 100
TFRAC(1)=1.0E-02 ;TFRAC(51)=0.51
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 20
XULAST =0.1
XFRAC(1)=0.05 ;XFRAC(3)=0.15
XFRAC(5)=0.25 ;XFRAC(7)=0.35
XFRAC(9)=0.45 ;XFRAC(11)=0.55
XFRAC(13)=0.65 ;XFRAC(15)=0.75
XFRAC(17)=0.85 ;XFRAC(19)=0.95
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 1
YVLAST =1.0E-03
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(148)=VPOR ;NAME(149)=EPOR
NAME(150)=TEMP
* Y in SOLUTN argument list denotes:
* 1-stored 2-solved 3-whole-field
* 4-point-by-point 5-explicit 6-harmonic averaging
SOLUTN(VPOR,Y,N,N,N,N,Y)
SOLUTN(EPOR,Y,N,N,N,N,Y)
SOLUTN(TEMP,Y,Y,N,N,N,Y)
EPOR = 149 ;HPOR = 0 ;NPOR = 0 ;VPOR = 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(TEMP,N,N,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 =1.0E+04 ;TMP1 =0. ;EL1 =0.
TSURR =0. ;TEMP0 =0. ;PRESS0 =0.
DVO1DT =0. ;DRH1DP =0.
EMISS =0. ;SCATT =0.
RADIA =0. ;RADIB =0.
ENUL =1. ;ENUT =0.
PRNDTL(TEMP)=1.25E+04
PRT(TEMP)=1.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(VPOR)=0. ;FIINIT(EPOR)=0.
FIINIT(TEMP)=1.
PATCH(POROSITY,LINVLX, 1, 20, 1, 1, 1, 1, 1, 1)
INIT(POROSITY,VPOR,-10. ,0.975 )
INIT(POROSITY,EPOR,-10. ,0.95 )
PATCH(MATERIAL,LINVLX, 10, 20, 1, 1, 1, 1, 1, 1)
INIT(MATERIAL,EPOR,-115. ,5.75 )
INIADD = T
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(SURFACE ,FREEN , 1, 20, 1, 1, 1, 1, 1, 100)
COVAL(SURFACE ,TEMP,10. ,0. )
PATCH(ROOT ,WWALL , 1, 1, 1, 1, 1, 1, 1, 100)
COVAL(ROOT ,TEMP,8.0E-05 ,1. )
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 1 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-05
************************************************************
Group 16. Terminate Iterations
LITER(TEMP)=20
ENDIT(TEMP)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(TEMP,FALSDT,1.0E+09)
OVRRLX =0.
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
VARMAX(VPOR)=1.0E+10 ;VARMIN(VPOR)=-1.0E+10
VARMAX(EPOR)=1.0E+10 ;VARMIN(EPOR)=-1.0E+10
VARMAX(TEMP)=1.0E+10 ;VARMIN(TEMP)=-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(VPOR,Y,N,Y,N,N,N)
OUTPUT(EPOR,Y,N,Y,N,N,N)
OUTPUT(TEMP,Y,Y,N,N,N,N)
************************************************************
Group 22. Monitor Print-Out
IXMON = 1 ;IYMON = 1 ;IZMON = 1
NPRMON = 100000 ;NPRMNT = 100 ;TSTSWP = 1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NTPRIN = 50 ;ISTPRF = 1 ;ISTPRL = 100000
NXPRIN = 2 ;IXPRF = 1 ;IXPRL = 10000
IPLTF = 1 ;IPLTL = -1 ;NPLT = -1
ISWPRF = 1 ;ISWPRL = 100000
ITABL = 3 ;IPROF = 1
ABSIZ =0.5 ;ORSIZ =0.2
NTZPRF = 1 ;NCOLPF = 50
ICHR = 2 ;NCOLCO = 45 ;NROWCO = 20
PATCH(FIXEDT ,PROFIL, 1, 20, 1, 1, 1, 1, 1, 100)
PLOT(FIXEDT ,TEMP,0. ,1. )
PATCH(FINTIP ,PROFIL, 20, 20, 1, 1, 1, 1, 1, 100)
PLOT(FINTIP ,TEMP,0. ,0. )
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
STOP