Project description DEENESFRITPL Optimising technology that will ensure aircraft go with the flow – and vice versa Flow separation is one of the most important problems in fluid mechanics and particularly aerospace design and control. When the flow of air 'detaches' from the surface of the aircraft, it results in reduced lift and increased pressure drag. Aside from increasing emissions because of greater fuel burn, it can affect the pilot's ability to control the aircraft in extreme cases. Pulsed jet actuators are a promising technology that can combat and control separation. The EU-funded PERSEUS project will combine numerical modelling and wind tunnel testing to determine the optimal parameters for improved jet pulse actuators. Show the project objective Hide the project objective Objective This project will combine wind tunnel experiments with numerical simulations and a sensitivity analysis to improve the control authority of pulsed jet actuators (PJAs) to separated turbulent flows over a 2.5D airfoil equipped with a flap. The target of this approach is to determine the minimum net-mass-flux required by pulsed jet actuators to compensate for the momentum deficit in the boundary layer. Controlling separation contributes to a decrease in the energy demand, leading to a decrease in CO2 emissions. It also improves the maneuvering capability, safety, and durability of the aircraft by reattaching the boundary layer and suppressing instabilities. The present work considers the sensitivity analysis, using a hierarchy of numerical models, using Reynolds-averaged Navier-Stokes simulations and large eddy simulations for both the flow inner and outer flow. These simulations will be calibrated using wind tunnel experiments by means of a data-assimilation method. The sensitivity analysis will then allow for determining the optimal parameters of the pulsed jet actuators such as operating frequency, output velocity together with their geometry including the actuators’ outflow aspect ratio, chordwise position and inter-actuator distance in the spanwise direction. The selected technology of PJAs will be an improved design of energy efficient fluidic oscillators capable of reaching high outflow velocities with operating frequencies ranging in the natural unstable frequencies of the outer flow. Novel manufacturing techniques such as xurography will also be tested to improve the cost and fabrication time of the PJAs, as well as their integration on the wing. Furthermore, the project will investigate the manufacturing and flow-control capabilities of dual-frequency fluidic oscillators, which may allow for further decreasing the net-mass-flux of the actuators by triggering instabilities with greater potential in altering boundary-layer separation. Fields of science engineering and technologymechanical engineeringvehicle engineeringaerospace engineeringaircraftnatural sciencescomputer and information sciencessoftwaresoftware applicationssimulation softwarenatural sciencesmathematicsapplied mathematicsmathematical model Keywords Flow separation control fluidic oscillators pulsed jet actuators sensitivity analysis dual-frequency actuator Programme(s) H2020-EU.3.4. - SOCIETAL CHALLENGES - Smart, Green And Integrated Transport Main Programme H2020-EU.3.4.5.4. - ITD Airframe Topic(s) JTI-CS2-2019-CFP10-AIR-02-77 - Increasing the efficiency of pulsed jet actuators for flow separation control Call for proposal H2020-CS2-CFP10-2019-01 See other projects for this call Funding Scheme RIA - Research and Innovation action Coordinator UNIVERSITE D'ORLEANS Net EU contribution € 294 500,00 Address Chateau de la source 45067 Orleans cedex 2 France See on map Region Centre — Val de Loire Centre — Val de Loire Loiret Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Other funding € 0,00 Participants (3) Sort alphabetically Sort by Net EU contribution Expand all Collapse all INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE TOULOUSE France Net EU contribution € 237 750,00 Address Avenue de rangueil 135 31077 Toulouse cedex 4 See on map Region Occitanie Midi-Pyrénées Haute-Garonne Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Other funding € 0,00 Third-party Legal entity other than a subcontractor which is affiliated or legally linked to a participant. The entity carries out work under the conditions laid down in the Grant Agreement, supplies goods or provides services for the action, but did not sign the Grant Agreement. A third party abides by the rules applicable to its related participant under the Grant Agreement with regard to eligibility of costs and control of expenditure. UNIVERSITE PAUL SABATIER TOULOUSE III France Net EU contribution € 8 750,00 Address Route de narbonne 118 31062 Toulouse cedex 9 See on map Region Occitanie Midi-Pyrénées Haute-Garonne Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Other funding € 0,00 ECOLE NATIONALE SUPERIEURE D'ARTS ET METIERS France Net EU contribution € 158 500,00 Address Boulevard de l hopital 151 75013 Paris See on map Region Ile-de-France Ile-de-France Paris Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Other funding € 0,00
