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http://dx.doi.org/10.5574/KSOE.2012.26.6.053

Experimental Study of Hydrodynamic Performance of Backward Bent Duct Buoy (BBDB) Floating Wave Energy Converter  

Kim, Sung-Jae (School of Naval Architecture and Ocean engineering, University of Ulsan)
Kwon, Jinseong (School of Naval Architecture and Ocean engineering, University of Ulsan)
Kim, Jun-Dong (School of Naval Architecture and Ocean engineering, University of Ulsan)
Koo, Weoncheol (School of Naval Architecture and Ocean engineering, University of Ulsan)
Shin, Sungwon (Department of Energy Plant, Kwandong University)
Kim, Kyuhan (Department of Civil Engineering, Kwandong University)
Publication Information
Journal of Ocean Engineering and Technology / v.26, no.6, 2012 , pp. 53-58 More about this Journal
Abstract
An experimental study on the hydrodynamic performance of a backward bent duct buoy (BBDB) was performed in a 2D wave tank. The BBDB is one of the promising oscillating water column (OWC) types of floating wave energy converters. Two different corner-shaped BBDBs (sharp-corner and round-corner) were used to measure the maximum chamber surface elevations and body motions for various incident wave conditions, and their hydrodynamic characteristics were compared. In order to investigate the effect of the pneumatic pressure inside the chamber, the heave and pitch angle interacted with elevations were compared for both open chamber and partially open chamber BBDBs. From the comparison study, the deviation in the chamber surface elevations between the two shapes of BBDBs was found to be significant near the resonance period, which may be explained by viscous energy loss. It was also found that the pneumatic pressure noticeably affected the chamber surface elevation and body motions.
Keywords
Oscillating water column (OWC); Floating wave energy converter; Chamber pressure; Water surface elevation; Motion RAO; 2-D Wave tank experiment;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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