TALK=T;RUN(1,1)
  DISPLAY


  It is supposed that a prolonged steady wind has created
  a uniform gradient in the surface level of a lake.

  When the wind suddenly ceases, the water level
  returns to horizontality, after oscillating a number
  of times which depends upon the lake-bed friction, but
  which is also influenced by "numerical diffusion"
  resulting from the limited number of time steps and
  space intervals employed.

  The pressure-dependent-porosity method is used.

  Setting idispa = 2 dumps field data to parphi at
  every second time step.

  PHOTON USE commands facilitate viewing.


  ENDDIS
  PHOTON USE
  p
  parphi
  1 1 0.8

  up z
  vi -y
  gr ou y 1

  con p1 y 1 fi;0.001
  msg vertical dimension is time, horizontal is distance
  msg contours of pressure
  pause;con off;cl
  con u1 y 1 fi;0.001
  msg vertical dimension is time, horizontal is distance
  msg contours of velocity
  ENDUSE
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(Flow In Lake After Wind Stops           )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 472
 ************************************************************
  Group 2. Time dependence
 STEADY = F
    * Set overall time and no. of steps
 TFIRST =0. ;TLAST =1000.
 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 = 50
 XULAST =1500.
 XFRAC(1)=0.02 ;XFRAC(11)=0.22
 XFRAC(21)=0.42 ;XFRAC(31)=0.62
 XFRAC(41)=0.82
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 1
 YVLAST =500.
 YFRAC(1)=1.
 ************************************************************
  Group 5. Z-Direction Grid Spacing
 PARAB = F
 NZ = 1
 ZWLAST =16.
 ZFRAC(1)=1.
 ************************************************************
  Group 6. Body-Fitted Coordinates
 ************************************************************
  Group 7. Variables: STOREd,SOLVEd,NAMEd
 ONEPHS = T
 NAME(1)=P1 ;NAME(3)=U1
 NAME(149)=VPOR ;NAME(150)=EPOR
    * 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(VPOR,Y,N,N,N,N,Y)
 SOLUTN(EPOR,Y,N,N,N,N,Y)
 EPOR = 150 ;HPOR = 0 ;NPOR = 0 ;VPOR = 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,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 =1000. ;TMP1 =0.
 EL1 =0.
 TSURR =0. ;TEMP0 =0.
 PRESS0 =0.
 DVO1DT =0. ;DRH1DP =6.37105E-06
 EMISS =0. ;SCATT =0.
 RADIA =0. ;RADIB =0.
 ENUL =1.0E-05 ;ENUT =0.
 PRNDTL(U1)=1.
 PRT(U1)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(P1)=0. ;FIINIT(U1)=0.
 FIINIT(VPOR)=1. ;FIINIT(EPOR)=1.
 
 PATCH(PINIT ,LINVLX, 1, 50, 1, 1, 1, 2, 1, 1)
 INIT(PINIT ,P1 ,1. ,-750. )
 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(LAKE-BED,LOW , 1, 50, 1, 1, 1, 1, 1, 1)
 COVAL(LAKE-BED,U1 ,1.0E-03 ,0. )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 5 ;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.)
 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(VPOR)=1.0E+10 ;VARMIN(VPOR)=-1.0E+10
 VARMAX(EPOR)=1.0E+10 ;VARMIN(EPOR)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 IPORIA = 1
 ISG62 = 1
 PORIA =1. ;PORIB =6.37105E-06
 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,N,N,N,N)
 OUTPUT(U1,Y,N,N,N,N,N)
 OUTPUT(VPOR,Y,N,N,N,N,N)
 OUTPUT(EPOR,Y,N,N,N,N,N)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 25 ;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 = 10 ;IXPRF = 1 ;IXPRL = 10000
 IPLTF = 1 ;IPLTL = -1 ;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(WAVE ,PROFIL, 1, 50, 1, 1, 1, 1, 1, 100)
 PLOT(WAVE ,P1 ,0. ,0. )
 PLOT(WAVE ,U1 ,0. ,0. )
 
 PATCH(HALFWAY ,PROFIL, 25, 25, 1, 1, 1, 1, 1, 100)
 PLOT(HALFWAY ,P1 ,0. ,0. )
 PLOT(HALFWAY ,U1 ,0. ,0. )
 ************************************************************
  Group 24. Dumps For Restarts
 SAVE = T ;NOWIPE = F
 NSAVE =CHAM
 IDISPA = 2 ;IDISPB = 0 ;IDISPC = 0
STOP