International Journal of Fluid Machinery and Systems
Online ISSN : 1882-9554
Original papers
Effect of Impulse Turbine Geometry on the Performance of a Dual-Turbine System for Wave Energy Conversion
Manabu TakaoHaruka KatsubeM. M. A. AlamSeisuke FukumaShinya OkuharaYoichi Kinoue
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Volume 11 (2018) Issue 1 Pages 110-114

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Abstract

Wells turbine, widely used to harness the wave energy, has high efficiency at a low flow rate. However, it has severe stall problem. In order to alleviate this problem, a dual-turbine system of Wells turbine with a booster impulse turbine was proposed. In the present study, the effect of impulse turbine geometries on the performance of combined turbine system was investigated by CFD analysis. As a result, the boosting effect of impulse turbine depends on the pressure differences that caused by the setting angles at a high flow rate. Moreover, the decrease of flow rate with the setting angle has a significant influence on the efficiency.

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© 2018 Turbomachinery Society of Japan, Korean Fluid Machinery Association, Chinese Society of Engineering Thermophysics, IAHR
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