Experimental Study of Shape Parameter of Land-based OWC Wave Energy Converter

doi:2012.26.3.33

J. Ocean Eng. Technol. > Volume 26(3); 2012 > Article

J. Ocean Eng. Technol. 2012;26(3):33-38.
DOI: https://doi.org/10.5574/KSOE.2012.26.3.033

Koo Weon-Cheol,Kwon Jin-Sung,Kim Jun-Dong,Kim Sung-Jae,Kim Min-Woo,Choi Mun-Kwan

School of Naval Architecture and Ocean Engineering University of Ulsan,School of Naval Architecture and Ocean Engineering University of Ulsan,School of Naval Architecture and Ocean Engineering University of Ulsan,School of Naval Architecture and Ocean

고정식 진동 수주형 파력 발전기(OWC) 형상 파라미터의 실험 연구

구원철,권진성,김준동,김성재,김민우,최문관

울산대학교 조선해양공학부,울산대학교 조선해양공학부,울산대학교 조선해양공학부,울산대학교 조선해양공학부,울산대학교 조선해양공학부,울산대학교 조선해양공학부

Keywords: Oscillating water column (OWC), Wave energy converter, Chamber pressure, Water surface elevation, Wave tank experiment

핵심용어: 진동수주, 파력발전기, 챔버 공기압, 수위 변위, 수조 실험

Abstract

The aim of this experimental study was to analyze the effect of the shape parameters and chamber pressure of a land-based oscillating water column (OWC) in regular incident waves. The magnitude of the free surface elevations inside the chamber was measured in a two-dimensional wave tank for various chamber skirt drafts and bottom slope angles. The surface elevations were also measured under both open chamber and partially open chamber conditions. From these measurements, the optimum shape of the OWC device could be predicted for the maximum wave energy conversion efficiency. It was found that the resonance frequency of the OWC system associated with incident waves moved toward the long wave region with increments of the draft of the chamber skirt and bottom slope. The behavior of the free surface elevation inside the chamber was also found to be dependent on the chamber pressure.