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Indexed by:会议论文

Date of Publication:2017-06-25

Included Journals:EI

Volume:0

Page Number:66-70

Abstract:The dual-chamber oscillating water column (OWC) is considered in this study. The device has two sub-chambers with a shared orifice. A fully-nonlinear numerical wave flume based on the potential-flow theory is applied for the simulation. At various wave conditions, effects of the chamber geometry (i.e. the draft and breadth of two chambers) on the hydrodynamic efficiency of the OWC device are investigated numerically. The hydrodynamic efficiency of the dual-chamber OWC is compared with that of the single-chamber one. The dual-chamber device shows a higher efficiency near the resonant frequency. Then, effects of the breadth and draft of two sub-chambers are discussed. It is observed that a proper set of two sub-chambers can increase the general hydrodynamic efficiency of the OWC device. Copyright © 2017 by the International Society of Offshore and Polar Engineers (ISOPE).