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Journal ArticleDOI

A modified Wells turbine for wave energy conversion

Toshiaki Setoguchi1, S. Santhakumar, Manabu Takao, T.H. Kim1, Kenji Kaneko1 
01 Jan 2003-Renewable Energy (Pergamon)-Vol. 28, Iss: 1, pp 79-91
TL;DR: In this paper, the rotor blade pitch was set asymmetrically at a positive pitch to achieve a higher mean efficiency in a wave cycle and the performance characteristics of a turbine with different blade setting angles in steady flow were found by experimentation.
About: This article is published in Renewable Energy.The article was published on 2003-01-01. It has received 84 citations till now. The article focuses on the topics: Oscillating Water Column & Wells turbine.
Citations
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Journal ArticleDOI
TL;DR: In this paper, a review of recent developments in the CFD modeling, geometry optimization, and performance enhancement of axial-flow wave energy converters has been presented, with a focus on axial flow self-rectifying turbines.

37 citations

Journal ArticleDOI
TL;DR: In this paper, a ring-type turbine with fixed guide vanes and an end plate and a ring on the tip of the turbine rotor is proposed as penetrating blade tip treatments.

37 citations

Journal ArticleDOI
TL;DR: In this paper, the experimental study of the flow in a Wells turbine submitted to an unsteady and bi-directional airflow was carried out on an experimental set-up that can simulate the real operating conditions of a wave energy conversion device using a two-dimensional hot-wire anemometer probe to analyse the flow field upstream and downstream of the turbine during its non-stationary operation.

34 citations

Journal ArticleDOI
16 Mar 2017
TL;DR: In this article, the system that is most often used for wave energy harvesting is described and compared to the one that is used for sea wave harvesting in this paper, which is a simple and relatively simple technique that determines a minimum impact on the environment.
Abstract: Sea wave energy is one of the main renewable energy resources. Its exploitation is relatively simple and determines a minimum impact on the environment. The system that is most often used for wave ...

34 citations

Journal ArticleDOI
TL;DR: In this paper, an oscillating water column wave energy harvesting system uses pneumatic power to run a turbine and generate power, both reaction (mainly Wells turbine) and impulse type turbines are tested in oscilla.
Abstract: Oscillating water column wave energy harvesting system uses pneumatic power to run a turbine and generate power. Both reaction (mainly Wells turbine) and impulse type turbines are tested in oscilla...

33 citations


Cites background from "A modified Wells turbine for wave e..."

  • ...Effects of guide vane angle and tip clearance (Dhanasekaran and Govardhan, 2005; Setoguchi et al., 2003; Taha et al., 2011) are important parameters for the performance of Wells turbine....

    [...]

  • ...Pitch-setting (Setoguchi et al., 2003) Improve efficiency by ~7%...

    [...]

References
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Journal ArticleDOI
TL;DR: In this article, the performance of a single plane biplane Wells turbine with or without guide vanes is compared with a wave energy device based on the principle of the oscillating water-air column.

286 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the influence of the turbine aerodynamic design on the overall plant performance, as affected by the turbine peak efficiency and the range of flow rates within which the turbine can operate efficiently.

109 citations

01 Jan 2002
TL;DR: The Mighty Whale is a floating wave power device based on the Oscillating Water Column (OWC) principle, which converts wave energy into electric energy, and produces a relatively calm sea area behind.
Abstract: Mighty Whale is a floating wave power device based on the Oscillating Water Column (OWC) principle. It converts wave energy into electric energy, and produces a relatively calm sea area behind. The open sea tests were begun in September 1998 in Gokasho Bay, Nansei Town, Mie Prefecture. Measurements collected since then include performance data in typhoon seasons. This paper presents the measurements of wave energy absorption, floating body motion, and wave height dissipation. It is expected that these results will be useful in the design of offshore wave power devices in the future.

78 citations

01 Jan 2000
TL;DR: The Mighty Whale as mentioned in this paper was used for open sea tests to investigate the use of wave energy for power generation in Mie Prefecture, Japan, and the results of the tests were summarized in a recent paper.
Abstract: JAMSTEC completed the construction of the prototype device Mighty Whale by May 1998 for open sea tests to investigate practical use of wave energy. Following construction, the prototype was towed to the test location near the mouth of Gokasho Bay in Mie Prefecture. The open sea tests were begun in September 1998, after final positioning and mooring operations were completed. The tests are expected to continue for approximately 2 years. This paper presents an overview of the open sea tests, and summarizes the characteristics of power generation based on the results so far.

59 citations

Journal Article
TL;DR: In this paper, the performance of the impulse turbine with fixed guide vanes was compared with that of the Wells turbine with a fixed guide vane, and it was shown that the running and starting characteristics of the latter were superior to those of the former under irregular wave conditions.
Abstract: The objective of this paper is to clarify the performance of impulse turbine with fixed guide vanes and to compare it with that of Wells turbine with guide vanes. As a result, a suitable choice of the design factors for the impulse turbine was shown for the inlet angle of rotor blade and the shape of guide vane. Furthermore, it was found that the running and starting characteristics of the impulse turbine were superior to those of the Wells turbine under irregular wave condition.

56 citations