Evaluating Mechanical Strength in Vertical-Axis Tidal Turbines: A Comparative Study of Internal Blade Structure and Material Selection through CFD SimulationMuhamad Ari, Yoyok Setyo Hadiwidodo and MukhtasorE3S Web Conf., 473 (2024) 03004DOI: https://doi.org/10.1051/e3sconf/202447303004