Convergence analysis of an augmented dual-mixed fnite element method with skew-symmetric Nitsche stabilization for the generalized Oseen equations with mixed boundary conditions

In this paper, we propose and analyze a new skew-symmetric Nitsche-augmented mixed scheme for the generalized Oseen equations with non-solenoidal convective fields, subject to mixed boundary conditions. The scheme is based on a continuous pseudostress-velocity augmented dual-mixed finite element for