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Study on Performance Variation According to the Arrangements of Adjacent Vertical-Axis Turbines for Tidal Current Energy Conversion
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 Title & Authors
Study on Performance Variation According to the Arrangements of Adjacent Vertical-Axis Turbines for Tidal Current Energy Conversion
Lee, Jeong-Ki; Hyun, Beom-Soo;
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Tidal farm is a multi-arrayed turbine system for utilizing tidal stream energy. For horizontal-axis turbine(HAT) system, it is recommended that each unit has to be deployed far apart in order to avoid hydrodynamic interference among turbines, as proposed by the European Marine Energy Centre(EMEC). But there is no rule for the arrangement of vertical-axis turbine(VAT) yet. Moreover it has been reported that a proper arrangement of adjacent turbines can enhance the overall efficiency even greater than an arrangement without mutual interference effect. This paper suggests the layout of VATs showing the better performances, which turned out to be quite different from HATs` arrangement. Numerical calculations were performed to investigate the performance variation in terms of the rotational direction as well as the distance between turbines. It has been shown that the best combination of rotational direction and distance between turbines can increase its performance higher about 9.2% than that of two independently operated turbines. It is likely that such improvement is due to the increased velocity between adjacent turbines. For diagonally arranged turbines, the maximum normalized mean power coefficient was obtained to be higher about 5.6% than that of two independent turbines. It is expected that the present results can be utilized for conceptual design of tidal farm to harness the tidal stream energy.
Vertical-axis turbine;Tidal farm;Multi-arrayed turbine;Interaction;Rotational direction;
 Cited by
Dabiri, O.J., 2011, "Potential order-of-magnitude enhancement of wind farm power density via counter-rotating vertical-axis wind turbine arrays", J. Renew. Sustain. Energ., Vol. 3, 043104. crossref(new window)

EMEC, 2009, "Assessment of Tidal Energy Resource - Marine renewable energy guides", the European Marine Energy Centre (EMEC).

Hyun, B. S. et al., 2012, "Tidal Stream Energy Research", Final report, Tidal Stream Energy Research Center.

Hyun, B. S. and Lee, J. K., 2013, "Hydrodynamic aspects on three-dimensional effects of vertical-axis tidal stream turbine", J. Korean Soc. Mar. Environ. Energy, Vol. 16, No. 2, 61-70. crossref(new window)

IEC, 2005, "Wind turbines - Part 1: Design requirements (IEC-61400-1)", Committee Draft, International Electrotechnical Commission (IEC).

Kinzel, M. et al., 2012, "Energy exchanging in an array of vertical-axis wind turbines", J. Turbulence, Vol. 13, No. 38, 1-13. crossref(new window)

Li, Y. and Calisal, M.S., 2010, "Modeling of twin-turbine systems with vertical axis tidal current turbines: Part I-Power output", J. Ocean Eng., Vol. 37, 627-637. crossref(new window)

Marsh, P. et al., 2015, "Three-dimensional numerical simulation of straight-bladed vertical axis tidal turbines investigating power output, torque ripple and mounting force", J. Renew. Energ., Vol. 83, 67-77. crossref(new window)

Rawlings, W.G., 2005, "Parametric characterization of an experimental vertical-axis hydro turbine", Thesis for master degree, University of British Columbia.