다목적 어군 모니터링 부이 유체동역학적 성능 평가 = Assessment of Hydrodynamic Performance of a Multi-Purpose Fish School Monitoring Buoy

다국어 초록 (Multilingual Abstract)

This study aims to assess the hydrodynamic performance and determine the optimal hull shape of a mul-ti-purpose fish school monitoring buoy, which is crucial for ICT-integrated smart fishery systems. The buoy, equipped with a solar module on the top for long-term independent operation, requires minimal motion response to ensure measuring system stability and maximize solar power efficiency. The motion response was analyzed in frequency domain, based on linear potential flow theory. Additionally, the vis-cous damping effect of the bottom damping plate was incorporated into the equation of motion using equivalent linearization of the Morison drag term. Analysis results showed that the application of a damping plate led to an overdamped state in heave motion, eliminating resonance. Furthermore, the damping plate significantly reduced the pitch motion response by up to 75% near the pitch natural fre-quency. Based on wave scatter diagrams from two target installation sites (Geoje and Yeosu), the damp-ing plate ensured an annual relative solar panel efficiency of 96% or higher. This study highlights the crit-ical role of the damping plate in ensuring stable system operation and provides fundamental data for fu-ture buoy development in the ocean and fisheries sectors.