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Effect of wave conditions on the performance and internal flow of a direct drive turbine

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Abstract

The purpose of the present study is to investigate the effect of wave conditions on the performance and internal flow of a newly developed direct drive turbine (DDT) model for wave energy conversion experimentally. All the experiments using the test turbine models are conducted in a 2-D wave channel. Monochromatic waves of various conditions of wave height and wave period are applied to the turbine performance test. The influences of turbine configuration on turbine performance are also investigated. Test results show that rotational speed, differential pressure, incident flow rate, maximum output power, and best efficiency of the turbine model vary considerably depending on the wave conditions. Installation of a front guide nozzle and a rear water reservoir to the test turbine improves the turbine performance. Large passage vortex occurs both at the front and rear turbine nozzles in turn through a reciprocating flow in the turbine passage.

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Author information

Authors and Affiliations

  1. School of Mechatronics, Changwon National University, Changwon, 641-773, Korea

    Young-Do Choi

  2. Department of Mechanical Engineering, Graduate School, Korea Maritime University, Busan, 606-791, Korea

    Chang-Goo Kim

  3. Division of Mechanical and Information Engineering, Korea Maritime University, Busan, 606-791, Korea

    Young-Ho Lee

Authors
  1. Young-Do Choi
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  2. Chang-Goo Kim
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  3. Young-Ho Lee
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Corresponding author

Correspondence to Young-Ho Lee.

Additional information

This paper was recommended for publication in revised form by Associate Editor Jun Sang Park

Young-Do Choi received his B.E. and M.E. degrees in Mechanical Engineering from Korea Maritime University, Korea in 1996 and 1998, respectively. He received his Ph.D. in Engineering from the Yokohama National University, Japan in 2003. Dr. Choi is currently a research professor at the School of Mechatronics, Chanwon National University in Changwon, Korea. His research interests include ocean energy, wind power, small hydro power, fluid machinery, PIV and CFD.

Chang-Goo Kim received his B.E. and M.E. degrees in Mechanical Engineering from Korea Maritime University, Korea in 2007 and 2009, respectively. Mr. Kim is currently a doctorate student in the Department of Mechanical Engineering, Graduate School, Korea Maritime University. His research interest includes ocean energy.

Young-Ho Lee received his B.E. and M.E. degrees from Korea Maritime University, Korea. He received his Ph.D. in Engineering from the University of Tokyo, Japan. Dr. Lee is currently a Professor at the Division of Mechanical and Information Engineering, Korea Maritime University. His research interests include ocean energy, wind energy, small hydro power, fluid machinery, PIV, and CFD.

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Choi, YD., Kim, CG. & Lee, YH. Effect of wave conditions on the performance and internal flow of a direct drive turbine. J Mech Sci Technol 23, 1693–1701 (2009). https://doi.org/10.1007/s12206-009-0414-4

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  • DOI: https://doi.org/10.1007/s12206-009-0414-4

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