This paper describes the structural design of an active flow-control experiment. The aim of the experiment is to investigate the increase in efficiency of an internally blown Coanda flap using unsteady blowing. The system uses tailor-made microelectromechanical (MEMS) pressure sensors to determine the state of the oncoming flow and an actuated lip to regulate the mass flow and velocity of a stream near a wall over the internally blown flap. Sensors and actuators are integrated into a highly loaded system that is extremely compact. The sensors are connected to a bus system that feeds the data into a real-time control system. The piezoelectric actuators using the d33 effect at a comparable low voltage of 120 V are integrated into a lip that controls the blowout slot height. The system is designed for closed-loop control that efficiently avoids flow separation on the Coanda flap. The setup is designed for water-tunnel experiments in order to reduce the free-stream velocity and the system’s control frequency by a factor of 10 compared with that in air. This paper outlines the function and verification of the system’s main components and their development.


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    Titel :

    Design of a high-lift experiment in water including active flow control


    Beteiligte:
    Beutel, T. (Autor:in) / Sattler, S. (Autor:in) / El Sayed, Y. (Autor:in) / Schwerter, M. (Autor:in) / Zander, M. (Autor:in) / Büttgenbach, S. (Autor:in) / Leester-Schädel, M. (Autor:in) / Radespiel, R. (Autor:in) / Sinapius, M. (Autor:in) / Wierach, P. (Autor:in)

    Erschienen in:

    Smart Materials and Structures ; 23 , 7 ; 077004/1-077004/10


    Erscheinungsdatum :

    2014


    Format / Umfang :

    10 Seiten, 21 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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