```
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 Press  to 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
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************

TEXT(Laminar Flow In Pipe-Transient          )

************************************************************
************************************************************

IRUNN = 1 ;LIBREF = 14
************************************************************
Group 2. Time dependence
* 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 =1.0E-02
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(3)=0.3
ZFRAC(5)=0.5 ;ZFRAC(7)=0.7
ZFRAC(9)=0.9
************************************************************
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.
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
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. )
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)
************************************************************
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 = 2 ;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. )
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
IDISPA = 1 ;IDISPB = 0 ;IDISPC = 0
CSG1    ='P'
STOP
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