The Performance Assessment of Wave and Tidal Array Systems (PerAWaT) project, launched in October 2009 with £8m of ETI investment.The project delivered validated, commercial software tools capable of significantly reducing the levels of uncertainty associated with predicting the energy yield of major wave and tidal stream energy arrays. It also produced information that will help reduce commercial risk of future large scale wave and tidal array developments.
A number of experimental and computational investigations carried out on actuator discs and model scale tidal turbines are documented in this report.The first of these is a combined experimental and computational study of the effect of a duct on the performance and wake of a tidal turbine.The second investigation involves a comparison of the software package ‘GH Tidal Bladed’ against experimental measurements of rotor performance in low blockage flow.
The final study is concerned with the effects of channel bed proximity onthe structure of a rotor wake. No clear effect of flow shear or channel bed proximity is observable ondownstream normalised velocity deficit or turbulence intensity
A comprehensive set of wake flow properties have been calculated from the test results by GL Garrad Hassan, which are included in the Appendix.
A number of experimental and computational investigations carried out on actuator discs and model scale tidal turbines are documented in this report.The first of these is a combined experimental and computational study of the effect of a duct on the performance and wake of a tidal turbine.The second investigation involves a comparison of the software package ‘GH Tidal Bladed’ against experimental measurements of rotor performance in low blockage flow.
The final study is concerned with the effects of channel bed proximity onthe structure of a rotor wake. No clear effect of flow shear or channel bed proximity is observable ondownstream normalised velocity deficit or turbulence intensity
A comprehensive set of wake flow properties have been calculated from the test results by GL Garrad Hassan, which are included in the Appendix.