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http://dx.doi.org/10.9765/KSCOE.2018.30.1.29

Performance Evaluation of an Axisymmetric Floating Wave Power Device with an Oscillating Water Column in the Vertical Cylinder  

Park, Woo-Sun (Coastal Engineering Division, Korea Institute of Ocean Science & Technology)
Jeong, Shin Taek (Department of Civil and Environmental Engineering, Wonkwang University)
Choi, Hyukjin (Department of Civil and Environmental Engineering, Wonkwang University)
Lee, Uk Jae (Department of Civil and Environmental Engineering, Wonkwang University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.30, no.1, 2018 , pp. 29-38 More about this Journal
Abstract
In order to evaluate the performance of the floating wave power, which is an axisymmetric oscillating water column type, linearized free surface boundary condition considering the influence of PTO (power takeoff) was derived and a finite element numerical model was established. Numerical experiments were carried out by varying cylinder length, skirt length, and depth of water, which are design parameters that can change the resonance of water column in cylinder and heave resonance of the float, which is considered to affect the power generation efficiency. Finally, the basic data necessary for the optimum design of the power generation system were obtained. As a result, the efficiency of the power generation system is dominated by the heave motion resonance of the float rather than the water column resonance in the cylinder, and the resonance condition for the heave motion can be changed efficiently by attaching the skirt to the outside of the buoy.
Keywords
floating wave power; PTO; oscillating water column; heave; resonance; finite element method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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