  We present a reduced order method (ROM) based on proper orthogonal
decomposition (POD) for the viscous Burgers' equation and the incompressible
Navier-Stokes equations discretized using an implicit-explicit hybrid
discontinuous Galerkin/discoutinuous Galerkin (IMEX HDG/DG) scheme. A novel
closure model, which can be easily computed offline, is introduced. Numerical
results are presented to test the proposed POD model and the closure model.
