A primal-dual active set method for bilaterally control constrained optimal control of the Navier-Stokes equations

This paper is devoted to the analysis and numerical solution of distributed optimal control of the Navier-Stokes equations in presence of bilateral pointwise control constraints. The analysis of the problem involves the proof of existence of an optimal solution, as well as the presentation of necessary and sufficient conditions for optimality. For the numerical solution of the problem we apply a primal-dual active set strategy and show global and local convergence properties of the method. Finally, some numerical experiments, which illustrate the performance of the method, are discussed.