FN Archimer Export Format
PT J
TI Experimental study of bathymetry generated turbulence on tidal turbine behaviour
BT 
AF Gaurier, Benoit
   Ikhennicheu, Maria
   Germain, Gregory
   Druault, Philippe
AS 1:1;2:1;3:1;4:2;
FF 1:PDG-REM-RDT-LCSM;2:PDG-REM-RDT-LCSM;3:PDG-REM-RDT-LCSM;4:;
C1 Ifremer, MetOcean Laboratory, 150 Quai Gambetta, 62 200, Boulogne-sur-mer, France
   Sorbonne Université, CNRS, UMR 7190, Institut Jean Le Rond d’Alembert, 75 005, Paris, France
C2 IFREMER, FRANCE
   UNIV SORBONNE, FRANCE
SI BOULOGNE
SE PDG-REM-RDT-LCSM
IN WOS Ifremer UPR
   copubli-france
   copubli-univ-france
IF 8.001
TC 23
UR https://archimer.ifremer.fr/doc/00628/73966/73325.pdf
LA English
DT Article
DE ;Turbulence;Experimental trials;Wall-mounted cylinder;PIV;LDV;Horizontal axis tidal turbine
AB In high flow velocity areas like those suitable for tidal applications, turbulence intensity is high and flow variations may have a major impact on tidal turbine behaviour. A three-bladed horizontal axis turbine model (scale 1:20) is positioned in the wake of a square wall-mounted cylinder, representative of specific in situ bathymetric variation, to experimentally study these effects in a current flume tank. Local and global loads are acquired in synchronization with velocity measurements to study the turbine response to flow fluctuations. Velocity measurements need to be obtained close to the turbine, contrary to what is commonly considered, to properly correlate velocity and loads fluctuations. Results show that the loads phase average and their dispersion evolve according to the sheared velocity profile. We conclude that the turbine load fluctuations directly respond to the low frequency velocity fluctuations and are dominated by the turbulent structures shed from the cylinder. It is then possible to compare the effects of large coherent turbulent structures on the turbine behaviour to cases with more classical free stream turbulence commonly studied. These results provide a substantive database in high Reynolds number flows for further fatigue analysis or recommendations for turbine positioning in such flows. 
PY 2020
PD AUG
SO Renewable Energy
SN 0960-1481
PU Elsevier BV
VL 156
UT 000540378500095
BP 1158
EP 1170
DI 10.1016/j.renene.2020.04.102
ID 73966
ER

EF