Simulations are reported on the behavior of two tandem symmetric foils in an in-line configuration undergoing pitching motion. The Reynolds number was varied between 1000 and 4000, whereas the pitching Strouhal number ranged from 0.2 to 0.5 and the amplitude of pitching varied from 4 to 8 deg. The streamwise separation distance between the foils was fixed at one chord length. The performance of the downstream foil was significantly worsened (up to 80% in efficiency) by the tandem effects. The Strouhal number, Reynolds number, and pitching amplitude had substantial impact on the performance of the downstream foil. For the upstream foil, however, the performance improved by up to 147% in efficiency at all ranges of Reynolds number, Strouhal number, and pitching amplitude. The scaling of the individual foil performance metric and the system collective performance metric were investigated for tandem foils. The scaling developed for isolated foils does hold for tandem foils in the in-line configuration with modified empirical coefficients that depend on reduced frequency and Reynolds number in a range of S t and R e . However, the leading foil behavior at lower S t is more scattered compared to higher S t , which suggests more significant wake interactions that influence the scaling and performance of the leading foil.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Effect of In-Line Tandem Configuration on Performance and Scaling of Pitching Hydrofoils


    Beteiligte:
    Şimşek, Emre (Autor:in) / Freeman, Benjamin (Autor:in) / Şentürk, Utku (Autor:in) / Hemmati, Arman (Autor:in)

    Erschienen in:

    AIAA Journal ; 58 , 11 ; 4620-4628


    Erscheinungsdatum :

    01.11.2020




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Performance of heaving and passively pitching hydrofoils

    Mattheijssens, Joris / Marcel, Jean-Paul / Bosschaerts, Walter et al. | AIAA | 2013


    Performance of Heaving and Passively Pitching Hydrofoils

    Mattheijssens, J. / Marcel, J.-P. / Bosschaerts, W. et al. | British Library Conference Proceedings | 2013


    Effects of Spanwise Spacing on the Interaction of Tandem Pitching Hydrofoils

    Lee, David S. / Hrynuk, John T. / Moored, Keith W. | AIAA | 2023



    Investigations on vortex evolution and wake dynamics of bio-inspired pitching hydrofoils

    Wang, Yefang / Shi, Lei / Bayeul-Lainé, Annie-Claude et al. | SAGE Publications | 2023