Fluid–Structure Interaction Modeling of Structural Loads and Fatigue Life Analysis of Tidal Stream Turbine

Developing reliable tidal-energy turbines of a large size and capacity links to preservation the structural safety stability blades. In this study, bidirectional fluid–structure coupling method was applied analyze hydrodynamic performance characteristics blade tidal-stream turbine. Analyses were conducted on transient stable stresses, fatigue, deformations under influence water depth turbine rotational speed. The predictions with without are similar measurements. water-depth change has little effect stress deformation blade, while turbine-speed most significant it. When just starts, will be subject sudden load. This is due increase in speed, resulting Similar trend stress, factor lower near root more impact structure’s safety. However, number cycles at different speeds within range.