Study on Performance of a Floating-Type OWC Chamber in Regular Waves

J. Ocean Eng. Technol. 1992;6(1):43-51.

부유식 OWC 챔버의 파랑중 거동특성 연구

홍도천,현범수,홍시영

해사기술연구소,해사기술연구소,해사기술연구소

Keywords: Oscillating Water Column, Wave Energy, Floating Type Breakwater, 2-D PotentialTtheory, Matching

핵심용어: 진동수주, 파도에너지, 부유식 소파제, 이차원 포텐시얼이론, 정합

Abstract

The hydrodynamic performance of a floating-type OWC (Oscillating Water Column) chamber is studied numerically and experimentally in this study. The numerical approach based on two-dimensional linear theory of floating wave absorber was attempted to design an efficient wave energy absorber, while model test was performed in a wave basin to test a performance of designed model and validate the reliability of developed numerical code. The focus of study is placed mainly on the experimental study to evaluate the principal characteristics of the designed OWC chamber in regular waves. The effects of the variation of wave height on OWC device and of air pressure inside chamber are also presented. Finally, the measured results were compared with computed ones, and it was shown that the designed chamber works with high efficiency $(eta_H>1$ over most of wave lengths covered by present study. It is therefore concluded that the developed code is capable of being successfully employed to design OWC chambers at various ocean environments, even though there exist some minor discrepancies between measured and computed results.