International Journal of Renewable Energy Research-IJRER
Numerical Study into the Effect of Working Environment on Energy Extraction Performance of Tandem Arranged Flapping Foils
Abstract
More recently, the oscillating foil hydrokinetics turbines, as a new method to extract energy from incoming flow field, have been studied significantly. However, the focus of previous investigations is directed towered the fundamental parameters which affect the performance of the system. In this work, the impact of working environment on the efficiency of flapping foil hydrokinetic turbine is investigated. The system is placed in proximity the floor sea and the mean distance between the foil pitching axis and the seabed, h0, are changed as h0=6c, 3c and 1.5c. The results show that the total energy extraction efficiency of shallow water condition has decreased considerably to compare with deep water case because of interaction between the boundary layer of the seabed and the flapping foils. In addition, the upstream foil losses more energy than downstream foil.
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DOI (PDF): https://doi.org/10.20508/ijrer.v8i3.7844.g7459
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Online ISSN: 1309-0127
Publisher: Gazi University
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