OS2-04 波力発電用衝動タービン性能に及ぼす動翼先端すき間と案内羽根形状の影響(OS2 自然エネルギー)

概要

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The objective of this study is to present the effects of rotor tip clearance and guide vane shape on the performance of impulse turbine with fixed guide vanes for wave energy conversion by experimental investigation and numerical simulation. The investigation has been performed by model testing for two hub-to-tip ratios of 0.6 and 0.7. Then, the turbine characteristics under sinusoidal flow conditions were obtained by using quasi-steady analysis. As a result, the effect of tip clearance on the turbine performance was clarified and it was found that the turbine characteristics for the case of v=0.7 is more sensitive to the tip clearance than the case of v=0.6. Furthermore, it was found that the efficiency of the turbine with 3D guide vanes are slightly superior to that of the turbine with 2D guide vanes because of the increase of torque by means of 3D guide vane.
社団法人日本機械学会の論文
2005-06-28