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ACTIVE FLOW CONTROL FOR DRAG REDUCTION OF VEHICLES USING LARGE EDDY SIMULATION, EXPERIMENTAL INVESTIGATIONS AND REDUCED ORDER MODELING

Jan Osth
Division of Fluid Dynamics, Department of Applied Mechanics, Chalmers University of Technology, SE-41296 Gothenburg, Sweden

Sinisa Krajnovic
Department of Mechanics and Maritime Sciences (M2), Chalmers University of Technology, Goteborg 41296, Sweden

Diogo Barros
Institute PPRIME, CNRS − Universite de Poitiers − ENSMA, UPR 3346, Departement Fluides, Thermique, Combustion, F-86961 Futuroscope Chasseneuil cedex, France

Laurent Cordier
Department Fluides, Thermique, Combustion, CEAT Institut PPRIME, CNRS-Universite de Poitiers-ENSMA, UPR 3346 43 rue de I'Aerodrome, F-86036 Poitiers CEDEX, France

Bernd R. Noack
Berlin Institute of Technology MB1 Strasse des 17. Juni 135, D-10623 Berlin, Germany; Departement Fluides, Thermique, Combustion Institut PPRIME, CNRS UPR 3346 CEAT, 43 rue de I'Aerodrome, F-86036 Poitiers, FRANCE

Jacques Boree
Institut Pprime, UPR CNRS 3346, ENSMA, Universite de Poitiers, BP 40109, 86961 Futuroscope Chasseneuil Cedex, France

Tony Ruiz
Institute PPRIME, CNRS − Universite de Poitiers − ENSMA, UPR 3346, Departement Fluides, Thermique, Combustion, F-86961 Futuroscope Chasseneuil cedex, France; Department of Research and Innovation, PSA Peugeot-Citroen 2 route de Gisy, 78943

Abstract

The purpose of this short paper is to introduce first results obtained in a collaborative research between the partners. This research is dedicated to drag reduction of vehicles using LES, experimental investigation and ultimately reduced order modeling. First numerical and experimental results are presented. Experiments show that periodic forcing at high frequencies and amplitudes of the order of the upstream velocities can be viewed as a promising strategy for drag reduction targeted control of three-dimensional bluff-bodies.