J. Ocean Eng. Technol. Search

CLOSE


J. Ocean Eng. Technol. 2002;16(3):19-27.    

A Study on the Floating OWC Chamber Motion in Waves
부유기 OWC 챔버의 파중 운동해석
홍도천
한국해양연구원 해양개발시스템연구본부
© 2002 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Floating Body Motion in Waves, OWC : Oscillating Water Column, Free Surface Oscillating Pressure Patch, Matched Green Integral Equation, Rankine-kelvin Green Function, Wave Energy Absorption
핵심용어: 파 중 부유체 운동, 진동수주, 자유표면 변동압력면, 정합 그린 적분방정식, 랜킨 및 켈빈형 그린함수, 파 에너지 흡수
Abstract
The motion of a floating OWC chamber in waves is studied taking account of fluctuating air pressure in the air chamber. An atmospheric pressure drop occurs across the upper opening of the chamber which causes not only hydrodynamic but also pneumatic added mass and damping forces to the floating chamber. A velocity potential in the water due to the free surface oscillating pressure patch is added to the conventional radiation-diffraction potential problem. the potential problem inside the chamber is formulated by making use of the Green integral equation associated with the Rankine Green function wile the outer problem with the Kelvin Green function. The two integral equations are solved simultaneously by making use of a matching boundary condition at the lower opening of the chamber to the outer water region. The chamber motion in the frequency domain is calculated for various values of parameters related to the atmospheric pressure drop. The present methods can also be sued for the analysis of air-cushion vehicle motion as well as for the design of a floating OWC wave energy absorber.


ABOUT
BROWSE ARTICLES
ARTICLE CATEGORY

Browse all articles >

PUBLICATION ETHICS
FOR CONTRIBUTORS
Editorial Office
President Office BD Rm. 1302, 13 Jungang-daero 180beon-gil, Dong-gu, Busan 48821, Republic of Korea
Tel: +82-51-759-0656    Fax: +82-51-759-0656    E-mail: ksoehj@ksoe.or.kr                

Copyright © 2024 by The Korean Society of Ocean Engineers.

Developed in M2PI

Close layer
prev next