Formulated in terms of velocity, pressure and the extra stress tensor, the
incompressible Navier-Stokes equations are discretized by stabilized finite
element methods. The stabilized methods proposed are analyzed for a linear model
and extended to the Navier-Stokes equations. The numerical tests performed
confirm the good stability characteristics of the methods. These methods are
applicable to various combinations of interpolation functions, including the
simplest equal-order linear and bilinear elements.