Worked Out Problem 15: Stabilized Reduced Method for an Advection Dominated Problem

In this chapter, we consider a scalar advection-diffusion PDE modeling a stabilized advection dominated flow problem in a two-dimensional domain. The aim is to obtain efficient evaluations of the unknown field for high Péclet number and the output of interest, defined as the average temperature over the boundary. The solution is approximated using reduced order modeling techniques based on the POD-Galerkin method and the Streamline/Upwind Petrov-Galerkin stabilization. The problem is described by presenting the physical domain, the goal, the parametrization, the boundary conditions, the governing PDE, and the corresponding weak formulation with its affine decomposition. Numerical results show the performance of the reduced approach with respect to the high-fidelity discretization, the quantity of interest, and the speedup. We provide the links to the source code, to the Jupyter notebook, and to the web-server ARGOS.