Experiments on line arrays of horizontal-axis hydroturbines

V. L. Okulov*, I. V. Naumov, I. K. Kabardin, I. V. Litvinov, D. M. Markovich, R. F. Mikkelsen, J. N. Sørensen, S. V. Alekseenko, D. H. Wood

*Corresponding author for this work

    Research output: Contribution to journalJournal articleResearchpeer-review

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    Abstract

    Utility-scale projects for hydrokinetic energy extraction from rivers, tidal or ocean currents could include tens to hundreds of turbines in densely-packed hydro farms. The aim of the present paper is to obtain a better understanding of the power production and wakes generated by several devices modeling a straight array of horizontal-axis water turbines in a hydro farm. To accomplish this, stereo particle image velocimetry experiments were carried out to measure the flow properties upstream and downstream of the devices in the array including up to four elements. The study also provides measured values of power and thrust coefficients of the model turbines using strain gauges installed directly on the rotor shaft. The current laboratory experiments provide data on the efficiency of water turbines in arrays or in a hydro farm arranged in a single line.
    Original languageEnglish
    JournalRenewable Energy
    Volume163
    Pages (from-to)15-21
    Number of pages7
    ISSN0960-1481
    DOIs
    Publication statusPublished - 2021

    Keywords

    • Horizontal-axis hydroturbines
    • Hydrofarm
    • Linearray
    • Power stabilization

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