Simulation of the hydrodynamic performance of a floating current turbine in a combined wave and flow environment is important. In this paper, ANSYS-CFX software is used to analyse the hydrodynamic performance of a vertical-axis turbine with various influence factors such as tip speed ratio, pitching frequency and amplitude. Time-varying curves for thrust and lateral forces are fitted with the least squares method; the added mass and damping coefficients are refined to analyse the influence of the former factors. The simulation results demonstrate that, compared with non-pitching and rotating turbines under constant inflow, the time-varying load of rotating turbines with pitching exhibits an additional fluctuation. The pitching motion of the turbine has a positive effect on the power output. The fluctuation amplitudes of thrust and lateral force envelope curves have a positive correlation with the frequency and amplitude of the pitching motion and tip speed ratio, which is harmful to the turbine’s structural strength. The mean values of the forces are slightly affected by pitching frequencies and amplitudes, but positively proportional to the tip speed ratio of the turbine. Based upon the least squares method, the thrust and lateral force coefficients can be divided into three components, uniform load coefficient, added mass and damping coefficients, the middle one being significantly smaller than the other two. Damping force plays a more important role in the fluctuation of loads induced by pitching motion. These results can facilitate study of the motion response of floating vertical-axis tidal current turbine systems in waves.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Forced Motion CFD Simulation and Load Refinement Evaluation of Floating Vertical-Axis Tidal Current Turbines


    Beteiligte:
    Zhang Wanchao (Autor:in) / Zhou Yujie (Autor:in) / Wang Kai (Autor:in) / Zhou Xiaoguo (Autor:in)


    Erscheinungsdatum :

    2020




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt





    ESS floating tidal energy platform with ESS and dual vertical axis turbines

    PARK JIN SOON / KIM SUNG WON / YI JIN HAK et al. | Europäisches Patentamt | 2025

    Freier Zugriff

    Flow-driven rotor simulation of vertical axis tidal turbines: A comparison of helical and straight blades

    Le Tuyen Quang / Lee Kwang-Soo / Park Jin-Soon et al. | DOAJ | 2014

    Freier Zugriff

    Vertical axis wind turbines

    BIRD GREGORY FRANCIS | Europäisches Patentamt | 2022

    Freier Zugriff

    Flow-driven rotor simulation of vertical axis tidal turbines: A comparison of helical and straight blades

    Le, Tuyen Quang / Lee, Kwang-Soo / Park, Jin-Soon et al. | Online Contents | 2014