Finite-difference Navier-Stokes — velocity streamlines and vorticity field
Parameters
Step: 0 | dt: —
Method: Marker-and-Cell (MAC) finite differences on a staggered grid. Pressure solved via iterative Poisson (SOR). Lid moves right at top boundary; no-slip elsewhere.
Re = UL/ν — higher Re → complex recirculation, corner vortices, eventual instability.