Viscous Damping of Wave Power Extracting System with a Resonant Channel

Title
Viscous Damping of Wave Power Extracting System with a Resonant Channel
Author(s)
서지혜; 박우선; 이진학; 오상호; 이중우
KIOST Author(s)
Seo, Jihye(서지혜)Park, Woo Sun(박우선)Yi, Jin Hak(이진학)Oh, Sang Ho(오상호)
Publication Year
2015-06-24
Abstract
Ocean wave are getting the spotlight among ocean energy sources as an important one, however, it is very difficult to reach its theoretical energy extraction potential. Because there are limiting factors for practical use in efficiency and economic feasibility of PTO (power take off) system. In this study, the effect of viscous damping for the wave power extracting system proposed by authors (Seo and Park, 2014) was evaluated by hydraulic model tests and numerical simulations. From the comparison of both results, viscous damping was found to be about 5% of the critical damping of the floater, which can be a significant role as the impact of the availability of the system. Consequently, it should be required to minimize the viscous damping so far as possible in order to realize the PTO system based on the resonant channel.economic feasibility of PTO (power take off) system. In this study, the effect of viscous damping for the wave power extracting system proposed by authors (Seo and Park, 2014) was evaluated by hydraulic model tests and numerical simulations. From the comparison of both results, viscous damping was found to be about 5% of the critical damping of the floater, which can be a significant role as the impact of the availability of the system. Consequently, it should be required to minimize the viscous damping so far as possible in order to realize the PTO system based on the resonant channel.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/25374
Bibliographic Citation
Proceedings of the Twenty-fifth (2015) International Ocean and Polar Engineering Conference, pp.902 - 906, 2015
Publisher
the International Society of Offshore and Polar Engineers (ISOPE)
Type
Conference
Language
English
Publisher
the International Society of Offshore and Polar Engineers (ISOPE)
Related Researcher
Research Interests

Ocean Energy-Tidal Current Energy Converter System,Infrastructure Management-Structural Health Monitoring,Offshore Wind,해양에너지-조류발전시스템,시설물 유지관리-구조건전성 평가,해상풍력

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