Recreational fishing in the Boulonnais: information from fishermen
Recreational fishing in the Boulonnais has multiple facets in terms of practices. A group of professor-researchers and engineers from the Université du Littoral Côte d’Opale (ULCO) and the Université de Lille looked more closely at this topic as part of a research project entitled PEROPALE. They examined which practices improve coastal management. About 40 interviews were held throughout 2017 and two workshops were organised in 2019 so that recreational fishermen/women could express their views and share their knowledge.
Turbulence analysis and multiscale correlations between synchronized flow velocity and marine turbine power production
The correlation between the flow turbulence and the performances of a marine current turbine is studied. The incoming flow encountered in the flume tank is characterized in the framework of fully developed turbulent cascades in the inertial range. The Reynolds number, the Kolmogorov dissipation scale and the integral scale, are estimated from flow measurements. The intermittency of the turbulence is characterized in the lognormal multifractal framework, and the influence of the turbulent flow on the turbine power is assessed.
The rotor speed control unit characteristics used for the turbine regulation induces non-negligible effects on the turbine behavior under fluctuations loads. Even if the power spectrum does not reveal any scale invariance, a multiscale analysis allows us to show the correlations between the turbulence time series and the power produced.
Duran-Medina Olmo, Schmitt François G., Calif Rudy, Germain Grégory, Gaurier Benoît, 2017. Turbulence analysis and multiscale correlations between synchronized flow velocity and marine turbine power production. Renewable Energy, 112: 314–327. https://doi.org/10.1016/j.renene.2017.05.024