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The Energy Capture Efficiency Increased by Choosing the Optimal Layout of Turbines in Tidal Power Farm

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Energy Solutions to Combat Global Warming

Part of the book series: Lecture Notes in Energy ((LNEN,volume 33))

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Abstract

In recent years, with the development of global economy, many environmental issues, such as energy shortage and global warming are becoming more and more serious all over the world, and more attention was paid on the better use of marine renewable energy. Among all the variety of marine renewable energy, tidal power generation technology is relatively mature. In order to gain more tidal energy for the purpose of commercial application, one of the best ways is to make turbine arrays in tidal power farm. Because of the wake effects on tidal steam turbines in tidal power farm, the performance of the flow field around the turbines was changed and has impact on the capture efficiency of electric power. Therefore, study on the interaction effects on tidal stream turbines and the optimization of the layout of the tidal stream turbine array becomes one of the key problems in the construction of tidal power farm, which directly influences the economic benefits of tidal power farm. There are many parameters that have impact on turbines in tidal farms, such as the distance between turbines, the longitudinal and lateral layout, the rotation direction of rotors, and so on. In this paper, different approaches (such as numerical calculating and simulation, model test, etc.) to study on the optimizing the layout of the horizontal axis tidal steam turbines in tidal power farm were introduced. These research works will provide theoretical basis for the construction of tidal power farms in the future. Optimized layout of turbines in tidal power farm can increase the capture efficiency of tidal turbines, and it has great sense to relieve energy shortage and global warming problem by obtaining more marine renewable energy.

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Abbreviations

A :

Transverse distance of turbines (m)

D :

Diameter of the rotor (m)

L :

Longitudinal distance of turbines (m)

M :

Mass (kg)

u :

Free-stream fluid velocity (m s−1)

\(\rho\) :

Density (kg m−3)

x :

Displacement on X-axis (m)

y :

Displacement on Y-axis (m)

z :

Displacement on Z-axis (m)

u :

Average velocity in X-direction (m s−1)

v :

Average velocity in Y-direction (m s−1)

w :

Average velocity in Z-direction (m s−1)

S u :

Generalized source term in momentum equation

S v :

Generalized source term in momentum equation

S w :

Generalized source term in momentum equation

CFD:

Computational Fluid Dynamics

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Acknowledgments

The study was financial supported by the National Natural Science Foundation of China (No. 51279191). The authors are very grateful for their financial support. All of the model tests were carried out in Shandong Provincial Key Laboratory of Marine Engineering in OUC, the authors were also thankful to all of the staff members in this laboratory.

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Correspondence to Junzhe Tan .

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Tan, J., Wang, S., Yuan, P., Wang, D., Ji, H. (2017). The Energy Capture Efficiency Increased by Choosing the Optimal Layout of Turbines in Tidal Power Farm. In: Zhang, X., Dincer, I. (eds) Energy Solutions to Combat Global Warming. Lecture Notes in Energy, vol 33. Springer, Cham. https://doi.org/10.1007/978-3-319-26950-4_10

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  • DOI: https://doi.org/10.1007/978-3-319-26950-4_10

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