Mechanism of Hysteretic Characteristics of Wells Turbine for Wave Power Conversion

[+] Author and Article Information
Y. Kinoue, T. Setoguchi, T. H. Kim, K. Kaneko

Department of Mechanical Engineering, Saga University, 1, Honjo Saga 840-8502, Japan

M. Inoue

Department of Mechanical Engineering Science, Kyushu University, 6-10-1 Hakozaki, Higashi-ku Fukuoka 812-8581, Japan

J. Fluids Eng 125(2), 302-307 (Mar 27, 2003) (6 pages) doi:10.1115/1.1538629 History: Received June 13, 2002; Revised October 21, 2002; Online March 27, 2003
Copyright © 2003 by ASME
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Inoue,  M., Kaneko,  K., Setoguchi,  T., and Simamoto,  K., 1985, “Studies on Wells Turbine for Wave Power Generator (4th Report, Starting and Running Characteristics in Periodically Oscillating Flow),” Trans. Jpn. Soc. Mech. Eng., Ser. B, 51(468), pp. 2746–2751 (in Japanese).
Inoue,  M., Kaneko,  K., Setoguchi,  T., and Koura,  F., 1987, “Hysteretic Characteristics of Wells Turbine in Reciprocating Flow,” Trans. Jpn. Soc. Mech. Eng., Ser. B, 53(496), pp. 3699–3704 (in Japanese).
Setoguchi, T., Kaneko, K., Hamakawa, H., and Inoue, M., 1990, “Measurement of Hysteresis on Wells Turbine Characteristics in Reciprocating Flow,” Proc. 1st International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows, ISECAIF, Beijing, China, pp. 537–543.
Alcorn, R. G., and Beattie, W. C., 1998, “Observations of Time domain Data on Wells Turbine in the Islay Wave-Power Plant,” Proc. 8th International Offshore and Polar Engineering Conference, ISOPE, Cupertino, CA, 1 , pp. 81–85.
Ericsson,  L. E., and Reding,  J. P., 1987, “Fluid Dynamics of Unsteady Separated Flow, Part II. Lifting Surfaces,” Prog. Aerosp. Sci., 24, pp. 249–356.
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Schematic view for OWC device
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Perspective view of grids
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Comparison of calculated results with experimental data by Inoue et al. 2
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Circumferential velocity contours at midspan
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Streamlines near the suction surface
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Streamlines starting from the trailing edge
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Pressure contours on the suction surface
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(a) Velocity diagram around the blade for αR=6 deg; (b) velocity diagram around the blade for αR=12 deg
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(a) Velocity diagram on the plane perpendicular to the chordwise direction for αR=6 deg; (b) velocity diagram on the plane perpendicular to the chordwise direction for αR=12 deg
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Illustrations of the flow structure in blade suction side
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Illustration of unsteady trailing shed vortices to affect the vortical wake flow



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