Flume tank characterization of marine current turbine blade behaviour under current and wave loading
|Author(s)||Gaurier Benoit1, 2, Davies Peter3, Deuff Albert3, Germain Gregory1, 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|
|WOS© Times Cited||56|
|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.|