There, Professor Noack has headed the group "Reduced-Order Modelling for Flow Control" at the School V "Transport and Machine Systems".
Later, he was Director of Research CNRS at Institute PPRIME, Poitiers and Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur (LIMSI), Paris-Saclay, France and Professor at Technische Universität Braunschweig, Germany.
He proposed the first mathematical Galerkin model for the two- and three-dimensional cylinder wake from Hilbert space considerations.
Subsequent works employ the proper orthogonal decomposition and propose numerous enablers accounting for the pressure term, subscale turbulence and departures from the training set.
He has distilled three major facets of nonlinearity in dynamical least-order models: The associated control laws can be derived from energy considerations and have been applied to streamlined and bluff bodies.