Collaborative research on tidal energy systems between Chinese Changchun University and Italian CNR-INM under the CNR-MOST program 2021-2022

The report presents the activity carried out by CNR-INM under a col- laborative research on tidal energy systems in partnership with the Chinese Changchun University. The activity has been performed in the framework of the CNR-MOST program 2021-2022 and falls within the broader objectives of the Tidal Energy Team at CNR-INM. Aim of the project was to enhance knowledge and design methodologies to develop hydrokinetic turbines for the exploitation of tidal sites characterized by low speed currents. The report is focused on the activity carried out by CNR-INM. The work was primarily dedicated to a computational methodology for the analysis and design of horizontal-axis turbines and for the prediction of the annual energy production in given operating conditions in a real tidal site. The methodology has been applied to perform a feasibility study for the exploitation of the tidal stream in the Messina Strait in the Mediterranean Sea, Italy. In parallel to this, the design of a small scale horizontal-axis turbine has been carried out and its construction has been started. The model turbine is equipped with a full power conversion unit and is intended for experimental research in the CNR-INM hydrodynamic testing facilities. The conclusions of the two-years collaborative research with the Chinese partners are drawn and opportunities for future collaboration are discussed.