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http://dx.doi.org/10.5293/IJFMS.2016.9.4.300

A Twin Impulse Turbine for Wave Energy Conversion -The Performance under Unsteady Airflow-

Alam, M M Ashraful (Department of Mechanical Engineering, National Institute of Technology, Matsue College)
Sato, Hideki (Advanced Engineering Faculty, National Institute of Technology, Matsue College)
Takao, Manabu (Department of Mechanical Engineering, National Institute of Technology, Matsue College)
Okuhara, Shinya (Support Center for Practical Education, National Institute of Technology, Matsue College)
Setoguchi, Toshiaki (Institute of Ocean Energy, Saga University)

Publication Information

International Journal of Fluid Machinery and Systems / v.9, no.4, 2016 , pp. 300-306 More about this Journal

Abstract

A twin unidirectional impulse turbine for wave energy conversion has been suggested in our previous study, and the performance under unsteady flow has been investigated by quasi-steady analysis. In the present study, the performance of twin impulse turbine under unsteady flow condition has been investigated by unsteady analysis of Computational fluid dynamics. As a result, the mean efficiency of twin unidirectional impulse turbine under unsteady flow is lower than the maximum efficiency of unidirectional impulse turbine. Moreover, it is verified that airflow goes backward in the reverse turbine in low flow rates.

Keywords

CFD; Fluid machinery; Oscillating water column; Twin-impulse turbine; Wave energy conversion;

Citations & Related Records

Reference

1	Wan Nik, W. B., Muzathik A. M., Samo, K. B., Ibrahim M. Z., 2009 "A Review of Ocean Wave Power Extraction; the primary interface," International Journal of Fluid Machinery and Systems, Vol. 2, No. 2, pp.156-164. DOI
2	Jayashankar, V., Anand, S., Geetha, T., Santhakumar, S., Kumar, V.J., Ravindran, M., Setoguchi, T., Takao, M., Toyota, K. and Nagata, S., 2009, "A Twin Unidirectional Topology for OWC Based Wave Energy Plants," Renewable Energy, Vol. 34, No. 3, pp. 692-698. DOI
3	Takao, M., Takami, A., Okuhara, S. and Setoguchi, T., 2011, "A Twin Unidirectional Impulse Turbine for Wave Energy Conversion," Journal of Thermal Science, Vol.20, No.5, pp.394-397. DOI
4	Takao, M., Setoguchi, T., Kaneko, K., Kim, T. H., Maeda, H and Inoue, M., 2002 "Impulse Turbine for Wave Power Conversion with Air Flow Rectification System," International Journal of Offshore and Polar Engineering, Vol.12, No.2, pp.142-146.
5	M. Hamajima, 1973, Gas Turbine - theory and design, Corona Publishing Co., Ltd., Tokyo, (in Japanese).
6	Setoguchi, T., Takao, M., Kaneko, K. and Inoue, M., 1998, "Effect of Guide Vanes on the Performance of a Wells Turbine for Wave Energy Conversion," International Journal of Offshore and Polar Engineering, Vol.8, No.2, pp.155-160.