Author
S. Raghunathan
Bio: S. Raghunathan is an academic researcher from Kyushu University. The author has contributed to research in topics: Wells turbine. The author has an hindex of 1, co-authored 1 publications receiving 35 citations.
Topics: Wells turbine
Papers
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12 May 1986
38 citations
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TL;DR: In this article, a review of the state of the art on self rectifying air turbines, which could be used for wave energy conversion, has been presented, and the overall performances of the turbines under irregular wave conditions, which typically occur in the sea, have been evaluated numerically and compared from the viewpoints of their starting and running characteristics.
221 citations
TL;DR: In this article, the state of the art in self-rectifying impulse air turbines is reviewed and the optimum parameters for the fixed-guide-vane impulse turbine are also presented.
206 citations
TL;DR: In this paper, the authors described the state of the art on air turbines, which could be used for wave energy conversion, including Wells type turbines, impulse turbines, radial turbines, cross-flow turbine, and Savonius turbine.
Abstract: This paper describes the present status of the art on air turbines, which could be used for wave energy conversion. The air turbines included in the paper are as follows: Wells type turbines, impulse turbines, radial turbines, cross-flow turbine, and Savonius turbine. The overall performances of the turbines under irregular wave conditions, which typically occur in the sea, have been compared by numerical simulation and sea trial. As a result, under irregular wave conditions it is found that the running and starting characteristics of the impulse type turbines could be superior to those of the Wells turbine. Moreover, as the current challenge on turbine technology, the authors explain a twin-impulse turbine topology for wave energy conversion.
100 citations
TL;DR: In this article, the authors present the formulation of the optimal control problem for WECs in the framework of direct transcription methods, known as spectral and pseudospectral optimal control.
88 citations
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.
84 citations