Order reduction and output feedback stabliization of an unstable CFD model

This paper extends earlier results on (optimal) control of nominally stable models in computational fluid dynamics by means of reduced-order models on state-space form. We consider stabilization of a computational fluid dynamics model of an unstable system. A stabilizing controller is found based on optimal control design for the reduced-order model and then applied to the full model, where it is shown through simulations to stabilize the system