Flume tank characterization of marine current turbine blade behaviour under current and wave loading

Type Article
Date 2013-11
Language English
Author(s) Gaurier BenoitORCID1, 2, Davies PeterORCID3, Deuff Albert3, Germain GregoryORCID1, 2
Affiliation(s) 1 : IFREMER, Hydrodynam & Metocean Serv, F-62200 Boulogne Sur Mer, France.
2 : Univ Lille Nord France, F-59000 Lille, France.
3 : IFREMER, Mat & Struct Grp, F-29280 Plouzane, France.
Source Renewable Energy (0960-1481) (Pergamon-elsevier Science Ltd), 2013-11 , Vol. 59 , P. 1-12
DOI 10.1016/j.renene.2013.02.026
WOS© Times Cited 32
Keyword(s) Experimental trials, Wave and current effects, Marine current turbine, Blade deformations, Hydrodynamic
Abstract The long term reliability of tidal turbines is critical if these structures are to be cost-effective. Optimized design requires a combination of material durability models and structural analyses which must be based on realistic loading conditions. This paper presents results from a series of flume tank measurements on strain gauged scaled turbine blades, aimed at studying these conditions. A detailed series of tests on a 3-blade horizontal axis turbine with 400 mm long blades is presented. The influence of both current and wave-current interactions on measured strains is studied. These tests show that wave-current interactions can cause large additional loading amplitudes compared to currents alone, which must be considered in the fatigue analysis of these systems.
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