input.dat

$general

    n_steps   =  10000 	        ,  ! number of time steps
    t_end     =  5000.0	          ,  ! physical time
    dt        =  0.0001             ,  ! time step
    nt_out    =  100             ,  ! output every nt_out timesteps
    
    rho       =  1.0            ,  ! density
    mu        =  0.01           ,  ! viscosity
    N         =  128            ,  ! number of gridpoints in x & y
    
$end

$velocity_bc

    setbc_north = .F.           ,    ! periodic (.F.) or set BC (.T.)
    setbc_east  = .F.           ,
    setbc_south = .F.           , 
    setbc_west  = .T.           ,

    u_north   =  0.0            ,    ! velocity boundary conditions
    v_north   =  0.0            ,

    u_east    =  0.0            ,
    v_east    =  0.0            ,
    
    u_south   =  0.0            ,
    v_south   =  0.0            ,
    
    u_west    =  1.0            ,
    v_west    =  0.0            ,

$end