Dataset for Paper "Role of preload in determining the performance enhancement of tidal turbines by passive pitch"

Experimental data and plotting scripts (MATLAB) correspond to the project "Role of preload in determining the performance enhancement of tidal turbines by passive pitch". The project studied the effect of spring preload in a passive blade pitch mechanism used for alleviating load fluctuations in tidal turbines. The data set has been produced in FloWave on a model-scale tidal turbine (December 2023). The data covers measured turbine loads for two far stream flow speeds, measured for a fixed-pitch turbine and a passively pitching counterpart at varied tip speed ratios. For the passively pitching case, three preloads have been tested, to show that the choice in spring preloads affects the point of matched time-averaged performance between passively pitching and fixed pitch turbines.