***** tank geometry *************************************************
Xmin      Xmax     Ymin     Ymax 
0.0       1.0      0.0      1.0  

***** grid definition ***********************************************
iMaxUs   jMaxUs    cx    cy     xpos    ypos
  18       18      -0.5   -0.5    0.5      0.5     

***** liquid properties *********************************************
 Nu   
0.01  

***** boundary conditions and inflow characteristics ****************
left    right   top   bottom   UIn   VIn    
 2        2      8       2     1.0   0.0   

***** discretization ***********************************************
Alpha   Divuv 
0.0      1

***** poisson iteration parameters ************* 
Epsi      ItMax   StrtP
1.0e-4    100       1

***** time step  *********************************
TFin   DelT    CFLMax  
25    0.025    0.5  

***** print/plot control ********************************************
PrtDt  uvp
1      0



---------------------------------------------------------------------
***** E X P L A N A T I O N ************* E X P L A N A T I O N *****
---------------------------------------------------------------------

**TANK GEOMETRY**
Xmin, Xmax, Ymin, Ymax : position of boundaries of computational domain

**GRID DEFINITION**
iMaxUs (<=130), jMaxUs (<=130) : number of cells including mirror cells,
                              the number of 'real' cells is iMaxUs-2, jMaxus-2
cx, cy     : stretchparameters - 0=no stretch; 
                                 >0=smaller cells near position
                                    indicated by xpos,ypos; 
                                 <0=smaller cells away from xpos,ypos

**LIQUID PROPERTIES**
Nu         : kinematic viscosity


**BOUNDARY CONDITIONS AND INFLOW CHARACTERISTICS**
left,right,top,bottom  : type of boundary condition
                             1=slip 
                             2=no-slip
                             7=free outflow : 
                                         as boundary condition the pressure 
                                         is set at 0
                             8=inflow  : the velocities are prescribed
UIn,VIn    : in case of inflow conditions, prescribed velocities
             the sign of UIn/VIn corresponds to the x/y-direction (hence it
             does not necessarily correspond to the inward pointing direction)

**DISCRETIZATION**
Alpha      : upwind parameter, discretization of convection term
                0 = central
                1 = upwind
Divuv      : treatment of divergence    
                0 = substitute div u^n=0 in Poisson equation
                1 = maintain div u^n in Poisson equation

**POISSON ITERATION PARAMETERS**
Epsi       : convergence criterion of Poisson solver MILU
ItMax      : maximal allowed number of iterations of Poisson solver
Strtp      : initial field of Poisson solver
               0 = zero field p=0 
               1 = solution from previous time step, p=poud; 

**TIME STEP**
TFin       : endtime of simulation
DelT       : timestep (is adjusted during the simulation in order to
             keep the CFL number smaller than CFLMax)
CFLMax     : maximal allowed CFL number

** PRINT/PLOT CONTROL**
PrtDt      : time between 2 small printouts (to the screen and a file)
uvp        : velocity and pressure in Matlab format 
               0=only at end of computation (preferable)
               1=at every small printout (takes a lot of memory)