Shape Design of the Duct for Tidal Converters Using Both Numerical and Experimental Approaches (pre-2015)

Chul H. Jo, Do Y. Kim, Su J. Hwang and Chan H. Goo
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Chul H. Jo: Department of Naval Architecture and Ocean Engineering, Inha University, Incheon 22212, Korea
Do Y. Kim: Department of Naval Architecture and Ocean Engineering, Inha University, Incheon 22212, Korea
Su J. Hwang: Department of Naval Architecture and Ocean Engineering, Inha University, Incheon 22212, Korea
Chan H. Goo: Department of Naval Architecture and Ocean Engineering, Inha University, Incheon 22212, Korea

Energies, 2016, vol. 9, issue 3, 1-8

Abstract: Recently, focus has been placed on ocean energy resources because environmental concerns regarding the exploitation of hydrocarbons are increasing. Among the various ocean energy sources, tidal current power (TCP) is recognized as the most promising energy source in terms of predictability and reliability. The enormous energy potential in TCP fields has been exploited by installing TCP systems. The flow velocity is the most important factor for power estimation of a tidal current power system. The kinetic energy of the flow is proportional to the cube of the flow’s velocity, and velocity is a critical variable in the performance of the system. Since the duct can accelerate the flow velocity, its use could expand the applicable areas of tidal devices to relatively low velocity sites. The inclined angle of the duct and the shapes of inlet and outlet affect the acceleration rates of the flow inside the duct. In addition, the volume of the duct can affect the flow velocity amplification performance. To investigate the effects of parameters that increase the flow velocity, a series of simulations are performed using the commercial computational fluid dynamics (CFD) code ANSYS-CFX. Experimental investigations were conducted using a circulation water channel (CWC).

Keywords: tidal current power (TCP); duct; circulation water channel (CWC); horizontal axis tidal turbine; ocean energy; experiment (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
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