Effects of blockage, arrangement and channel-dynamics on performance of turbines in tidal array

@article{Gong2017EffectsOB,
  title={Effects of blockage, arrangement and channel-dynamics on performance of turbines in tidal array},
  author={Xi-Wu Gong and Ye Li and Zhiliang Lin},
  journal={arXiv: Fluid Dynamics},
  year={2017}
}
How to increase the power per turbine is crucial for the development of tidal energy as this decides the performance and economics of the turbine in tidal array. In this work we combine the two-scale partial array model and one-dimensional channel model to investigate the effects of blockage, arrangement and channel-dynamics on tidal turbine together and individually. The power per turbine is deduced as the product of two parameters, the power coefficient measuring the power acquired from… 

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  • 2018
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References

SHOWING 1-10 OF 25 REFERENCES

Assessment of arrays of in-stream tidal turbines in the Bay of Fundy

  • R. KarstenA. SwanJ. Culina
  • Physics, Engineering
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2013
A turbine array model is derived that extends LMADT by using the velocity field from a numerical simulation of the flow through Minas Passage and modelling the turbine wakes, allowing for the sequential positioning of turbines in regions of strongest flow.

A one-dimensional model for tidal array design based on three-scale dynamics

In order to make the extraction of tidal current energy economically viable, the power production per turbine must be optimised in each tidal array. Furthermore, the impact of power extraction on the

The efficiency of an array of tidal turbines partially blocking a wide channel

Abstract A new theoretical model is proposed to explore the efficiency of a long array of tidal turbines partially blocking a wide channel cross-section. An idea of scale separation is introduced

Performance of two-dimensional tidal turbine arrays in free surface flow

Encouraged by recent studies on the performance of tidal turbine arrays, we extend the classical momentum actuator disc theory to include the free surface effects and allow the vertical arrangement

The efficiency of a turbine in a tidal channel

There is an upper bound to the amount of power that can be generated by turbines in tidal channels as too many turbines merely block the flow. One condition for achievement of the upper bound is that

Tuning turbines in a tidal channel

  • R. Vennell
  • Engineering, Physics
    Journal of Fluid Mechanics
  • 2010
As tidal turbine farms grow they interact with the larger scale flow along a channel by increasing the channel's drag coefficient. This interaction limits a channel's potential to produce power. A 1D