Preconditioning a Hybridizable Discontinuous Galerkin Method for Navier–Stokes at High Reynolds Number
Abstract. We introduce a preconditioner for a hybridizable discontinuous Galerkin discretization of the linearized Navier–Stokes equations at high Reynolds number. The preconditioner is based on an augmented Lagrangian (AL) approach of the full discretization. Unlike standard grad-div type augmentation, however, we co...