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Journal of Korean Society of Coastal and Ocean Engineers > Volume 32(6); 2020 > Article
J Korean Soc Coast Ocean Eng 2020;32(6): 481-495. doi: https://doi.org/10.9765/KSCOE.2020.32.6.481
공진장치에 의한 지진해일파의 제어에 관한 수치시뮬레이션(I) (임원항과 묵호항에 대해)
이광호1, 전종혁2, 김도삼3, 이윤두4
1가톨릭관동대학교 토목공학과 부교수
2일본 나고야대학 대학원 환경학연구과 박사과정
3한국해양대학교 건설공학과 교수
4부산광역시 건설안전시험사업소 도로보수팀장
Numerical Simulation on Control of Tsunami by Resonator (I) (for Imwon and Mukho ports)
Kwang-Ho Lee1, Jong-Hyeok Jeon2, Do-Sam Kim3, Yun-Du Lee4
1Associate Professor, Dept. of Civil Eng., Catholic Kwandong University
2Doctor Course Student, Graduate School of Environmental Studies, Nagoya University, Japan
3Professor, Dept. of Civil Eng., Korea Maritime and Ocean Univ., 727 Taejong-ro, Yeongdo-ku, Busan 49112, Korea
4Deputy Director of Road Maintenance Team, Construction Safety Test Office, Busan Metropolitan City
Corresponding author: Do-Sam Kim ,Tel: +82-51-410-4463, Fax: +82-51-403-0656, Email: kimds@kmou.ac.kr
Received: November 20, 2020;  Revised: December 11, 2020.  Accepted: December 15, 2020.
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ABSTRACT
After the resonator on the basis of the wave-filter theory was designed to control the waves with a specific frequency range surging into the harbor, the several case with the use of resonator have been reported in some part of sea, including the port of Long Beach, USA, and yacht harbor at Rome, Italy in order to control the long-period wave motion from the vessels. Recently, the utility and applicability of the resonator has been sufficiently verified in respect of the control of tsunami approximated as the solitary wave and/or the super long-period waves. However, the case with the application of tsunami in the real sea have not been reported yet. In this research, the respective case with the use of existing resonator at the port of Mukho and Imwon located in the eastern coast of South Korea were studied by using the numerical analysis through the COMCOT model adapting the reduction rate of 1983 Central East Sea tsunami and 1993 Hokkaido Southwest off tsunami. Consequently, the effectiveness of resonator against tsunami in the real sea was confirmed through the reduction rate of maximum 40~50% at the port of Mukho, and maximum 21% at the port of Imwom, respectively. In addition, it was concluded that it is necessary to study about the various case with application of different shape, arrangement, and size of resonator in order to design the optimal resonator considering the site condition.
Keywords: resonator, real sea, tsunami, reduction rate of tsunami height, Mukho port, Imwon port, numerical analysis
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