The paper reviews recent research and development activities in the field of hydropower
technology. It covers emerging and advanced technologies to mitigate flow instabilities …

The total load rejection is one of the most critical operation cases for pumped storage power
plants. In order to allow for a safe plant operation, the plant unit needs to be brought to a …

Featured Application The present numerical investigation gives some insights regarding the
challenges to compute the flow in hydraulic Francis turbines at off-design operating points …

The demonstration of flexibility technologies to enhance ancillary services of Hydropower
Plants (HPPs) is showcased by the XFLEX HYDRO H2020 European Project. The potential …

The need to decarbonize our energy production push us toward the use of renewable
sources such as solar, wind and hydraulic energies. These renewable energies often suffer …

Modern sources of energy, like solar and wind, force hydropower machines to change their
operational behaviour. Rapid changes in the availability of renewable energies lead to …

The study is motivated by the fact that cracks on the runner blades of a 100 MW Francis
turbine prototype have been noticed. The possible origin: a drastic increase of the number of …

Résumé Ce mémoire présente le développement, à l'aide de simulations numériques
d'écoulement, d'une méthode de contrôle des tourbillons en colonne dans une turbine …

After 30 years of operation, the runners of the four 100 MW high-head Francis turbines
successively developed fatigue cracks starting from the hub-side trailing-edge fillets …

Due to the varying demand of power grid for the electric supply of hydraulic power stations,
the units are often under low-load operating condition and no-load standby state, causing a …