TALK=T;RUN(1,1)
   PHOTON USE
   AUTOPLOT
   file
   phi 5

   cl
   msg MHD PLANE COUETTE FLOW
   msg Hartmann number = 4
   msg Velocity (W1) profile
   msg Blue line --- PHOENICS solution
   msg crosses ---   analytical solution
   da 1 w1;da 1 w1a
   col3 1;blb4 2
   msg press  to continue
   pause

   msg press  to end
   pause
   end
   END_USE
  DISPLAY

     123456789-123456789-123456789-123456789-

  DISPLAY
   This problem concerns the steady fully-developed laminar
   flow of an incompressible electrically-conducting fluid
   in the positive z-direction of a plane channel. The top
   wall of the channel is moving and the bottom wall is stationary.
   A uniform magnetic field By is imposed normal to the walls and
   a current jx is induced in the fluid in the x-direction, together
   with a magnetic field Bz in the z-direction. The problem neglects
   end effects, secondary flows, Hall effect and ion-slip phenomena.
  ENDDIS
 ************************************************************
  Group 1. Run Title and Number
 ************************************************************
 ************************************************************
 
 TEXT(1D Laminar MHD Couette Flow             )
 
 ************************************************************
 ************************************************************
 
 IRUNN = 1 ;LIBREF = 14
 ************************************************************
  Group 2. Time dependence
 STEADY = T
 ************************************************************
  Group 3. X-Direction Grid Spacing
 CARTES = T
 NX = 1
 XULAST =1.
 XFRAC(1)=1.
 ************************************************************
  Group 4. Y-Direction Grid Spacing
 NY = 50
 YVLAST =1.
 YFRAC(1)=0.02 ;YFRAC(2)=0.04
 YFRAC(3)=0.06 ;YFRAC(4)=0.08
 YFRAC(5)=0.1 ;YFRAC(6)=0.12
 YFRAC(7)=0.14 ;YFRAC(8)=0.16
 YFRAC(9)=0.18 ;YFRAC(10)=0.2
 YFRAC(11)=0.22 ;YFRAC(12)=0.24
 YFRAC(13)=0.26 ;YFRAC(14)=0.28
 YFRAC(15)=0.3 ;YFRAC(16)=0.32
 YFRAC(17)=0.34 ;YFRAC(18)=0.36
 YFRAC(19)=0.38 ;YFRAC(20)=0.4
 YFRAC(21)=0.42 ;YFRAC(22)=0.44
 YFRAC(23)=0.46 ;YFRAC(24)=0.48
 YFRAC(25)=0.5 ;YFRAC(26)=0.52
 YFRAC(27)=0.54 ;YFRAC(28)=0.56
 YFRAC(29)=0.58 ;YFRAC(30)=0.6
 YFRAC(31)=0.62 ;YFRAC(32)=0.64
 YFRAC(33)=0.66 ;YFRAC(34)=0.68
 YFRAC(35)=0.7 ;YFRAC(36)=0.72
 YFRAC(37)=0.74 ;YFRAC(38)=0.76
 YFRAC(39)=0.78 ;YFRAC(40)=0.8
 YFRAC(41)=0.82 ;YFRAC(42)=0.84
 YFRAC(43)=0.86 ;YFRAC(44)=0.88
 YFRAC(45)=0.9 ;YFRAC(46)=0.92
 YFRAC(47)=0.94 ;YFRAC(48)=0.96
 YFRAC(49)=0.98 ;YFRAC(50)=1.
 ************************************************************
  Group 5. Z-Direction Grid Spacing
 PARAB = T
 NZ = 1
 ZWLAST =1.
 ZFRAC(1)=1.
 ************************************************************
  Group 6. Body-Fitted Coordinates
 ************************************************************
  Group 7. Variables: STOREd,SOLVEd,NAMEd
 ONEPHS = T
 NAME(7)=W1 ;NAME(150)=W1A
    * Y in SOLUTN argument list denotes:
    * 1-stored 2-solved 3-whole-field
    * 4-point-by-point 5-explicit 6-harmonic averaging 
 SOLUTN(W1,Y,Y,N,N,N,Y)
 SOLUTN(W1A,Y,N,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(W1,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. ;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(W1)=1.
 PRT(W1)=1.
 CP1 =1. ;CP2 =1.
 ************************************************************
  Group 10.Inter-Phase Transfer Processes
 ************************************************************
  Group 11.Initial field variables (PHIs)
 FIINIT(W1)=1.0E-10 ;FIINIT(W1A)=1.0E-10
 
 PATCH(IN1 ,INIVAL, 1, 1, 1, 1, 1, 1, 1, 1)
 INIT(IN1 ,W1A ,0. ,1.466134E-03 )
 
 PATCH(IN2 ,INIVAL, 1, 1, 2, 2, 1, 1, 1, 1)
 INIT(IN2 ,W1A ,0. ,4.40779E-03 )
 
 PATCH(IN3 ,INIVAL, 1, 1, 3, 3, 1, 1, 1, 1)
 INIT(IN3 ,W1A ,0. ,7.37767E-03 )
 
 PATCH(IN4 ,INIVAL, 1, 1, 4, 4, 1, 1, 1, 1)
 INIT(IN4 ,W1A ,0. ,0.010395 )
 
 PATCH(IN5 ,INIVAL, 1, 1, 5, 5, 1, 1, 1, 1)
 INIT(IN5 ,W1A ,0. ,0.013478 )
 
 PATCH(IN6 ,INIVAL, 1, 1, 6, 6, 1, 1, 1, 1)
 INIT(IN6 ,W1A ,0. ,0.016648 )
 
 PATCH(IN7 ,INIVAL, 1, 1, 7, 7, 1, 1, 1, 1)
 INIT(IN7 ,W1A ,0. ,0.019925 )
 
 PATCH(IN8 ,INIVAL, 1, 1, 8, 8, 1, 1, 1, 1)
 INIT(IN8 ,W1A ,0. ,0.023329 )
 
 PATCH(IN9 ,INIVAL, 1, 1, 9, 9, 1, 1, 1, 1)
 INIT(IN9 ,W1A ,0. ,0.026883 )
 
 PATCH(IN10 ,INIVAL, 1, 1, 10, 10, 1, 1, 1, 1)
 INIT(IN10 ,W1A ,0. ,0.030609 )
 
 PATCH(IN11 ,INIVAL, 1, 1, 11, 11, 1, 1, 1, 1)
 INIT(IN11 ,W1A ,0. ,0.03453 )
 
 PATCH(IN12 ,INIVAL, 1, 1, 12, 12, 1, 1, 1, 1)
 INIT(IN12 ,W1A ,0. ,0.038673 )
 
 PATCH(IN13 ,INIVAL, 1, 1, 13, 13, 1, 1, 1, 1)
 INIT(IN13 ,W1A ,0. ,0.043064 )
 
 PATCH(IN14 ,INIVAL, 1, 1, 14, 14, 1, 1, 1, 1)
 INIT(IN14 ,W1A ,0. ,0.04773 )
 
 PATCH(IN15 ,INIVAL, 1, 1, 15, 15, 1, 1, 1, 1)
 INIT(IN15 ,W1A ,0. ,0.052702 )
 
 PATCH(IN16 ,INIVAL, 1, 1, 16, 16, 1, 1, 1, 1)
 INIT(IN16 ,W1A ,0. ,0.058011 )
 
 PATCH(IN17 ,INIVAL, 1, 1, 17, 17, 1, 1, 1, 1)
 INIT(IN17 ,W1A ,0. ,0.063692 )
 
 PATCH(IN18 ,INIVAL, 1, 1, 18, 18, 1, 1, 1, 1)
 INIT(IN18 ,W1A ,0. ,0.06978 )
 
 PATCH(IN19 ,INIVAL, 1, 1, 19, 19, 1, 1, 1, 1)
 INIT(IN19 ,W1A ,0. ,0.076316 )
 
 PATCH(IN20 ,INIVAL, 1, 1, 20, 20, 1, 1, 1, 1)
 INIT(IN20 ,W1A ,0. ,0.08334 )
 
 PATCH(IN21 ,INIVAL, 1, 1, 21, 21, 1, 1, 1, 1)
 INIT(IN21 ,W1A ,0. ,0.090898 )
 
 PATCH(IN22 ,INIVAL, 1, 1, 22, 22, 1, 1, 1, 1)
 INIT(IN22 ,W1A ,0. ,0.099038 )
 
 PATCH(IN23 ,INIVAL, 1, 1, 23, 23, 1, 1, 1, 1)
 INIT(IN23 ,W1A ,0. ,0.107812 )
 
 PATCH(IN24 ,INIVAL, 1, 1, 24, 24, 1, 1, 1, 1)
 INIT(IN24 ,W1A ,0. ,0.117276 )
 
 PATCH(IN25 ,INIVAL, 1, 1, 25, 25, 1, 1, 1, 1)
 INIT(IN25 ,W1A ,0. ,0.127492 )
 
 PATCH(IN26 ,INIVAL, 1, 1, 26, 26, 1, 1, 1, 1)
 INIT(IN26 ,W1A ,0. ,0.138523 )
 
 PATCH(IN27 ,INIVAL, 1, 1, 27, 27, 1, 1, 1, 1)
 INIT(IN27 ,W1A ,0. ,0.150442 )
 
 PATCH(IN28 ,INIVAL, 1, 1, 28, 28, 1, 1, 1, 1)
 INIT(IN28 ,W1A ,0. ,0.163324 )
 
 PATCH(IN29 ,INIVAL, 1, 1, 29, 29, 1, 1, 1, 1)
 INIT(IN29 ,W1A ,0. ,0.177252 )
 
 PATCH(IN30 ,INIVAL, 1, 1, 30, 30, 1, 1, 1, 1)
 INIT(IN30 ,W1A ,0. ,0.192315 )
 
 PATCH(IN31 ,INIVAL, 1, 1, 31, 31, 1, 1, 1, 1)
 INIT(IN31 ,W1A ,0. ,0.20861 )
 
 PATCH(IN32 ,INIVAL, 1, 1, 32, 32, 1, 1, 1, 1)
 INIT(IN32 ,W1A ,0. ,0.22624 )
 
 PATCH(IN33 ,INIVAL, 1, 1, 33, 33, 1, 1, 1, 1)
 INIT(IN33 ,W1A ,0. ,0.245319 )
 
 PATCH(IN34 ,INIVAL, 1, 1, 34, 34, 1, 1, 1, 1)
 INIT(IN34 ,W1A ,0. ,0.265969 )
 
 PATCH(IN35 ,INIVAL, 1, 1, 35, 35, 1, 1, 1, 1)
 INIT(IN35 ,W1A ,0. ,0.288322 )
 
 PATCH(IN36 ,INIVAL, 1, 1, 36, 36, 1, 1, 1, 1)
 INIT(IN36 ,W1A ,0. ,0.312521 )
 
 PATCH(IN37 ,INIVAL, 1, 1, 37, 37, 1, 1, 1, 1)
 INIT(IN37 ,W1A ,0. ,0.338721 )
 
 PATCH(IN38 ,INIVAL, 1, 1, 38, 38, 1, 1, 1, 1)
 INIT(IN38 ,W1A ,0. ,0.367091 )
 
 PATCH(IN39 ,INIVAL, 1, 1, 39, 39, 1, 1, 1, 1)
 INIT(IN39 ,W1A ,0. ,0.397811 )
 
 PATCH(IN40 ,INIVAL, 1, 1, 40, 40, 1, 1, 1, 1)
 INIT(IN40 ,W1A ,0. ,0.431078 )
 
 PATCH(IN41 ,INIVAL, 1, 1, 41, 41, 1, 1, 1, 1)
 INIT(IN41 ,W1A ,0. ,0.467106 )
 
 PATCH(IN42 ,INIVAL, 1, 1, 42, 42, 1, 1, 1, 1)
 INIT(IN42 ,W1A ,0. ,0.506125 )
 
 PATCH(IN43 ,INIVAL, 1, 1, 43, 43, 1, 1, 1, 1)
 INIT(IN43 ,W1A ,0. ,0.548384 )
 
 PATCH(IN44 ,INIVAL, 1, 1, 44, 44, 1, 1, 1, 1)
 INIT(IN44 ,W1A ,0. ,0.594156 )
 
 PATCH(IN45 ,INIVAL, 1, 1, 45, 45, 1, 1, 1, 1)
 INIT(IN45 ,W1A ,0. ,0.643731 )
 
 PATCH(IN46 ,INIVAL, 1, 1, 46, 46, 1, 1, 1, 1)
 INIT(IN46 ,W1A ,0. ,0.69743 )
 
 PATCH(IN47 ,INIVAL, 1, 1, 47, 47, 1, 1, 1, 1)
 INIT(IN47 ,W1A ,0. ,0.755593 )
 
 PATCH(IN48 ,INIVAL, 1, 1, 48, 48, 1, 1, 1, 1)
 INIT(IN48 ,W1A ,0. ,0.818596 )
 
 PATCH(IN49 ,INIVAL, 1, 1, 49, 49, 1, 1, 1, 1)
 INIT(IN49 ,W1A ,0. ,0.88684 )
 
 PATCH(IN50 ,INIVAL, 1, 1, 50, 50, 1, 1, 1, 1)
 INIT(IN50 ,W1A ,0. ,0.960763 )
 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(WALLTOP ,NWALL , 1, 1, 50, 50, 1, 1, 1, 1)
 COVAL(WALLTOP ,W1 ,1. ,1. )
 
 PATCH(WALLBOT ,SWALL , 1, 1, 1, 1, 1, 1, 1, 1)
 COVAL(WALLBOT ,W1 ,1. ,0. )
 
 PATCH(MHDFOR ,VOLUME, 1, 1, 1, 50, 1, 1, 1, 1)
 COVAL(MHDFOR ,W1 ,16. ,0. )
 XCYCLE = F
 EGWF = T
 WALLCO = GRND2
 ************************************************************
  Group 14. Downstream Pressure For PARAB
 IPARAB = 0
 AZPH =0. ;PBAR =0.
 ************************************************************
  Group 15. Terminate Sweeps
 LSWEEP = 1 ;ISWC1 = 1
 LITHYD = 10 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
 SELREF = T
 RESFAC =1.0E-04
 ************************************************************
  Group 16. Terminate Iterations
 LITER(W1)=10
 ENDIT(W1)=1.0E-03
 ************************************************************
  Group 17. Relaxation
 RELAX(W1,FALSDT,1.)
 RELAX(W1A,LINRLX,1.)
 OVRRLX =0.
 EXPERT = F ;NNORSL = F
 ************************************************************
  Group 18. Limits
 VARMAX(W1)=1.0E+06 ;VARMIN(W1)=-1.0E+06
 VARMAX(W1A)=1.0E+10 ;VARMIN(W1A)=-1.0E+10
 ************************************************************
  Group 19. Data transmitted to GROUND
 PARSOL = F
 ISG62 = 1
 ************************************************************
  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(W1,Y,N,Y,Y,Y,Y)
 OUTPUT(W1A,Y,N,Y,N,N,N)
 ************************************************************
  Group 22. Monitor Print-Out
 IXMON = 1 ;IYMON = 50 ;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
 NYPRIN = 1 ;IYPRF = 1 ;IYPRL = 10000
 NZPRIN = 1 ;IZPRF = 1 ;IZPRL = 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
   No PATCHes yet used for this Group
 ************************************************************
  Group 24. Dumps For Restarts
 SAVE = T ;NOWIPE = F
 NSAVE =CHAM
STOP