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Performance studies on a direct drive turbine for wave power generation in a numerical wave tank

Prasad, Deepak D. and Ahmed, Mohammed R. and Lee, Y.H. (2012) Performance studies on a direct drive turbine for wave power generation in a numerical wave tank. [Conference Proceedings]

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    Abstract

    Studying wave characteristics and performance of wave energy convertors is very important. This can be achieved by conducting model tests in physical wave tanks. However, model testing requires significant money and time investment. At times the size of the prototype is big and requires large open space for construction and testing. In addition to this, it is difficult to conduct tests at all operating conditions and design variables with respect to time line and budget. A logical and simple solution is to utilize numerical methods such as the use of Computational Fluid Dynamics (CFD) software. In the current study, a commercial code ANASYS-CFX is used to simulate a numerical wave tank (NWT). The waves in the NWT are generated using a piston type wave-maker which was located at the inlet of the wave tank. The maximum turbine power is obtained at 35 rpm both experimentally and numerically. The results of CFD simulation show good agreement with the experimental data with the difference less than 3%. From CFD analysis, the maximum power is 6.71 W compared to 6.8 W obtained experimentally. The efficiency at 35 rpm is 44.73% and 45.33% respectively from CFD and experiments.

    Item Type: Conference Proceedings
    Additional Information: I have obtained formal permission from the copyright owners to deposit the final paper on the USP research repository.
    Subjects: T Technology > TJ Mechanical engineering and machinery
    Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics
    Depositing User: M. Rafiuddin Ahmed
    Date Deposited: 24 Jan 2013 11:18
    Last Modified: 10 Jan 2017 11:03
    URI: http://repository.usp.ac.fj/id/eprint/5427
    UNSPECIFIED

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