Abstract
The paper investigates the efficiency of tidal turbine farms and looks at the effects of various parameters. Numerical modelling and analytic solutions are used. The two methods are compared and differences highlighted. Some loose guidelines are included.
Highlights
The migration towards clean renewable energy has driven a renewed interest in producing power from waves and tidal currents
That is from an energy flux of 4.1 kW/m2
A number of authors have expanded the earlier work and a brief summary is as follows: Garret and Cummins (Garrett & Cummins, 2005) (GC05) analysed a turbine farm occupying a channel with a constant flow, they allow the turbines to affect the flow rate as the effective friction is increased due to the farm
Summary
The migration towards clean renewable energy has driven a renewed interest in producing power from waves and tidal currents. Single turbines in a tidal flow field behave as expected and the output may be predicted readily. There is a balance between trying to extract maximum power and having minimum effect on the flow field. This is complicated by the fact that most of these turbines have to generate power from the ebb and flood tide. It is found that a single turbine produces its rated power but as the effects of shadowing increase the output per unit decreases This is as one would expect as the turbines in a group slow the flow field in a macro sense. Guidelines for future work and turbine farm development are presented
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