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TALK=T;RUN(1,1)
PHOTON USE
p; parphi;  1 1 500

gr ou y 1
msg pressure; distance is vertical, time horizontal
con p1 y 1 fi;1
msg Press  to continue
pause;con off;red
msg velocity; distance is vertical, time horizontal
con u1 y 1 fi;1
enduse
DISPLAY
Air is moving steadily along a pipe. Valves are suddenly closed
at each end, bringing the air to rest there. The subsequent
distributions of velocity and pressure in the pipe are to be
predicted.

The analysis is one-dimensional, and the process is supposd to
be isentropic, ie without either friction or heat transfer.

ENDDIS
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************

TEXT(Pressure Waves From Valve Closure       )

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

IRUNN = 1 ;LIBREF = 0
************************************************************
Group 2. Time dependence
* Set overall time and no. of steps
TFIRST =0. ;TLAST =1.0E-02
FSTEP = 1 ;LSTEP = 100
TFRAC(1)=1.0E-02 ;TFRAC(21)=0.21
TFRAC(41)=0.41 ;TFRAC(61)=0.61
TFRAC(81)=0.81
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 100
XULAST =2.
XFRAC(1)=1.0E-02 ;XFRAC(21)=0.21
XFRAC(41)=0.41 ;XFRAC(61)=0.61
XFRAC(81)=0.81
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 1
YVLAST =1.
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(1)=P1 ;NAME(3)=U1
NAME(149)=PRPS ;NAME(150)=RHO1
* 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(PRPS,Y,N,N,N,N,Y)
SOLUTN(RHO1,Y,N,N,N,N,Y)
DEN1 = 150
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,N,Y,Y,Y)
DIFCUT =0.5 ;ZDIFAC =1.
GALA = F ;ADDDIF = F
NEWRH1 = 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 = GRND3 ;TMP1 =0.
EL1 =0.
TSURR =0. ;TEMP0 =0.
PRESS0 =0.
DVO1DT =3.33E-03 ;DRH1DP = GRND3
RHO1A =2.682563E-04 ;RHO1B =0.71429
RHO1C =0.
EMISS =0. ;SCATT =0.
ENUL =1.569E-05 ;ENUT =0.
CP1 =1007. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=1.0E+05 ;FIINIT(U1)=1.
FIINIT(PRPS)=-1. ;FIINIT(RHO1)=1.
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
No PATCHes yet used for this Group
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 10 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-04
************************************************************
Group 16. Terminate Iterations
LITER(P1)=20 ;LITER(U1)=10
ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(U1,FALSDT,1.)
RELAX(PRPS,LINRLX,1.)
RELAX(RHO1,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(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10
VARMAX(RHO1)=1.0E+10 ;VARMIN(RHO1)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
IDISPB = 1 ;IDISPC = 100
ISG62 = 1
SPEDAT(SET,DOMAIN,PHASE_1_MAT,I,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(U1,Y,N,Y,Y,Y,Y)
OUTPUT(PRPS,Y,N,Y,N,N,N)
OUTPUT(RHO1,Y,N,Y,N,N,N)
************************************************************
Group 22. Monitor Print-Out
IXMON = 50 ;IYMON = 1 ;IZMON = 1
NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NTPRIN = 20 ;ISTPRF = 1 ;ISTPRL = 100000
NXPRIN = 20 ;IXPRF = 1 ;IXPRL = 10000
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(ALLX ,PROFIL, 1, 100, 1, 1, 1, 1, 1, 100)
PLOT(ALLX ,P1 ,0. ,0. )
PLOT(ALLX ,U1 ,0. ,0. )

PATCH(TIMEPLOT,PROFIL, 50, 50, 1, 1, 1, 1, 1, 100)
PLOT(TIMEPLOT,P1 ,0. ,0. )
PLOT(TIMEPLOT,U1 ,0. ,0. )
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
IDISPA = 1 ;IDISPB = 1 ;IDISPC = 100
STOP
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