Numerical modeling of vertical-axis and transverse-flow hydrokinetic turbine in the Loire river

Olivier Bertrand, Luc Duron, Caroline Girard, Jerônimo Zanette, Favio Dominguez

Friday 3 july 2015

11:45 - 12:00h at Europe 1 (level 0)

Themes: (T) Hydro-environment, (ST) Renewable energy resources

Parallel session: 15G. Environment - Renewable

Hydrokinetic turbines can recover the kinetic energy of marine or river currents. The Hydrofluv research and development project (funded by FUI with the support of the Tenerrdis, DERBI and DREAM clusters) aims to demonstrate the feasibility and acceptability of vertical-axis and transverse-flow turbines. Members of the Hydrofluv project, Hydroquest, FOC Transmissions, ERNEO, Biotope, EDF, Artelia and the LEGI laboratory are working both on improving the machines and on a more complete commercial offer (administrative authorizations, impact studies and profitability). Numerical modeling conducted by the LEGI laboratory and Hydroquest has led to the definition of the machine’s characteristics and main parameters. The incorporation of these terms in a larger three-dimensional numerical model has enabled other parameters to be analyzed, such as head loss around the machine (variation in the free surface and current), the interactions between machines and hydrosedimentary impacts. Several academic studies have validated the developments made by comparing the models. The practical application concerns a study of the prototype scheduled to be placed in the Loire at Orleans at the end of 2014. The model accurately represents the impacts of a machine on its environment and has proved to be highly representative compared to more specific local models, which are for the moment two-dimensional and require longer calculation times.