数値計算による波力発電用空気室特性の推定(流体機器・船舶・航空機(2),一般講演)

概要

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An OWC type wave power generation is consisted of an air-chamber with an oscillating wave column (OWC) and a turbine-generator. Two numerical methods are described for analyzing the characteristics of the air-chamber installed a breakwater. One is the eigenfunction expansion method under the condition that the linear water wave theory is applicable. The method is useful, because the solutions give good agreement with the experimental results in the practical range and are able to calculate in short time. However the method cannot predict the loss and the theoretical efficiency of OWC is 100%. The other method uses the computational fluid dynamics of Navier-Stokes equation in order to create the mechanism of the loss. It is predicted by the CFD that the source of the loss is the very large vortex generated in front of the air-chamber.
日本流体力学会の論文
2008-09-04