A two-dimensional numerical investigation is performed to study the influence of slot width of multi-stage stationary floating overtopping wave energy devices on overtopping flow rate and performance. The hydraulic efficiency based on captured crest energy of different device layouts is compared with that of single-stage device to determine the effect of the geometrical design. The results show optimal trends giving a huge increase in overtopping energy. Plots of efficiency versus the relative slot width show that, for multi-stage devices, the greatest hydraulic efficiency is achieved at an intermediate value of the variable within the parametric range considered, relative slot width of 0.15 and 0.2 depending on design layouts. Moreover, an application of adaptive slot width of multi-stage device is investigated. The numerical results show that the overall hydraulic efficiency of non-adaptive and adaptive slot devices are approximately on par. The effect of adaptive slot width on performance can be negligible. Keywords: Wave energy converter, Overtopping, Multi-stage, Slot width


    Access

    Download


    Export, share and cite



    Title :

    Influence of slot width on the performance of multi-stage overtopping wave energy converters


    Contributors:


    Publication date :

    2017




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown





    Prediction of Irregular Wave Overtopping

    Ahrens, John P. | HENRY – Federal Waterways Engineering and Research Institute (BAW) | 1977

    Free access

    Practical calculation of parabolic overtopping wave energy converter

    Liu, Zhen / Hyun, Beom-Soo / Hong, Key-Yong | Tema Archive | 2008


    Wave overtopping of stepped revetments

    Kerpen, Nils B. / Schoonees, Talia / Schlurmann, Torsten | TIBKAT | 2019

    Free access

    Wave-overtopping type wave power generation buoy

    SHENG CHUANMING / LIAN JIJIAN / XU BAO et al. | European Patent Office | 2016

    Free access