TY - EJOU AU - Nicolás, Alfredo AU - Bermúdez, Blanca TI - Viscous Incompressible Flows by the Velocity-Vorticity Navier-Stokes Equations T2 - Computer Modeling in Engineering \& Sciences PY - 2007 VL - 20 IS - 2 SN - 1526-1506 AB - 2D viscous incompressible flows are presented from the unsteady Navier-Stokes equations in its velocity-vorticity formulation. The results are obtained using a simple numerical procedure based on a fixed point iterative process to solve the nonlinear elliptic system that results once a second order time discretization is performed. Flows on the un-regularized unit driven cavity problem are reported up to Reynolds numbers Re=4000 to compare them with those reported by other authors, mainly solving the steady problem, and supposed to be correct. Moreover, results are reported for Re = 1000, 4000, 5000, and 10000 to see how their flows look like close from its departure t = 0. KW - DO - 10.3970/cmes.2007.020.073