Experimental database of a tidal turbine in a wall-mounted square cylinder wake

Date 2019-10
Temporal extent 2019-05 -2019-07
Author(s) Ikhennicheu MariaORCID1, Germain GregoryORCID1, Gaurier BenoitORCID1
Affiliation(s) 1 : Ifremer, Marine Structures Laboratory, Boulogne-sur-mer, France
DOI 10.17882/62635
Publisher SEANOE
Keyword(s) Turbulence, Experimental trials, Wall-mounted Cylinder, PIV, LDV, Turbulent Kinetic Energy, LE-PIV
Abstract

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 turbines behaviour. Large boils that can be observed at the sea surface are emitted from the sea floor and may interact with tidal turbines deployed in the area. The turbulent flow and its impact on tidal turbines have then to be characterized. The Reynolds number, based on the rugosity height and mean flow velocity, is rather high in this context: Re=2.5x107. For that purpose, experiments are carried out in a flume tank with Re as high as achievable in Froude similitude (in the tank: Re=2.5x105 and Fr=0.23) in order to study the turbine behaviour placed in the wake of seabed obstacles. The obstacle is here a canonical square wall-mounted cylinder chosen to be representative of specific in situ bathymetric variations. This obstacle produces a very extended wake embedded with large scale turbulent structures. A tri-bladed horizontal axis turbine is positioned at various positions in the cylinder wake. Using PIV and LDV measurements, the flow past the cylinder is investigated and the local and global loads on the turbine are also acquired. The turbine is considered idle or in rotation (TSR=3,4 or 5). The database created is presented in this report.

Licence CC-BY-ND
Utilisation Data are published without any warranty, express or implied. The user assumes all risk arising from his/her use of data. Data are intended to be research-quality and include estimates of data quality and accuracy, but it is possible that these estimates or the data themselves contain errors. It is the sole responsibility of the user to assess if the data are appropriate for his/her use, and to interpret the data, data quality, and data accuracy accordingly. Authors welcome users to ask questions and report problems.
Data
File Size Format Processing Access
LDV 29 MB TEXTE Raw data Open access
PIV 2 GB TEXTE Processed data Open access
Turbine 62 MB TEXTE Raw data Open access
Read Me 6 MB PDF Open access
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How to cite 

Ikhennicheu Maria, Germain Gregory, Gaurier Benoit (2019). Experimental database of a tidal turbine in a wall-mounted square cylinder wake. SEANOE. https://doi.org/10.17882/62635