The aerodynamics of oscillating airfoils are crucial to understanding subjects such as rotor dynamics and bio-inspired flows. Unsteady airfoils have been studied extensively, but there is an overall lack of knowledge regarding newer and more complex kinematics. The present paper builds upon our modified version of the NACA0012 by numerically comparing its way of flapping with the standard flapping that is common in the literature. The comparison is conducted parametrically at a Reynolds number of 104 for two nondimensional amplitudes. Then, using a gradient-based optimization method, we search for pitching amplitudes that maximize the propulsive power and efficiency for both flapping modes. Results indicate that the proposed flapping methodology is more promising than conventional flapping, with thrust increases up to approximately 40%. Furthermore, the proposed mechanism achieves maximum propulsive power with near-optimal efficiency, a common limitation of traditional flapping airfoils.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Optimal leading-edge deflection for flapping airfoil propulsion


    Beteiligte:


    Erscheinungsdatum :

    01.12.2023




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Propulsion of flapping and oscillating airfoil

    Garrick, I.E. | Engineering Index Backfile | 1936




    Flexible Flapping Airfoil Propulsion at Low Reynolds Numbers

    Heathcote, Sam / Gursul, Ismet | AIAA | 2005


    Flexible Flapping Airfoil Propulsion at Low Reynolds Numbers

    Heathcote, S. / Gursul, I. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 2005