A Study of Pneumatic Reaction Force of Air Chamber for an OWC Type Wave Energy Device by Forced Heave Experiments

J. Ocean Eng. Technol. 2005;19(3):11-17.

Hong Seok-Won,Choi Hark-Sun,Lew Jae-Moon,Kim Jin-Ha

Ocean Development System Division KORDI,Ocean Development System Division KORDI,Department of Ship and Ocean Engineering Chungnam National University,Ocean Development System Division KORDI

강제동요시 OWC형 파력발전 공기챔버의 공기반력 실험연구

홍석원,최학선,류재문,김진하

한국해양연구원 해양개발시스템연구본부,한국해양연구원 해양개발시스템연구본부,충남대학교 선박해양공학과,한국해양연구원 해양개발시스템연구본부

Keywords: Pneumatic Reaction Force, OWC, Forced Heave Experiments, Wave Energy, Air Chamber

핵심용어: 공기반력, 진동수주, 강제동요장치, 파력에너지, 공기챔버

Abstract

The effect of frequency and amplitude of the OWC (Oscillating Water Column) motion on the nonlinear reaction forces in an air duct are studied experimentally. Experimental owe model is idealized as a simple circular cylinder with an orifice type air duct located at the middle oj the top rid. Reaction forces due to forced heave oscillation are measured and analyzed. By subtracting the effect of inertia forces and restoring forces, pneumatic damping force and added spring force are deduced. The effects of the frequency and amplitude of the heave motion are discussed. Also, the effects of solidity of the duct on the reaction forces are discussed.