DYNAMICAL STUDY FOR A HYDROKINETIC TURBINE BLADE: CASE OF STUDY BENDING MODE

Tidal stream energy is one of the highest energy potential sources in the world. The hydrokinetic turbine (HKT) blades are the most important part of this technology, and their modal behavior has a great influence on the overall dynamics and stress distribution due to the bending mode during the rotation of the blades. The present work aims to present a theoretical and numerical analysis model for a HKT blade using the finite element method in the case of bending mode. A code for calculating blade vibration and stress was developed in order to obtain the neutral frequencies, eigenmodes, blade deformation, and calculate the stress distribution along the blade.