%0 Journal Article %T Stability of a colocated finite volume scheme for the incompressible Navier-Stokes equations %A Sebastien Zimmermann %J Mathematics %D 2007 %I arXiv %X We introduce a finite volume scheme for the two-dimensional incompressible Navier-Stokes equations. We use a triangular mesh. The unknowns for the velocity and pressure are both piecewise constant (colocated scheme). We use a projection (fractional-step) method to deal with the incompressibility constraint. We prove that the differential operators in the Navier-Stokes equations and their discrete counterparts share similar properties. In particular, we state an inf-sup (Babuska-Brezzi) condition. We infer from it the stability of the scheme. %U http://arxiv.org/abs/0704.0772v1