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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 나원배
- 발행연도
- 2013
- 저작권
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Abstract
Environment-friendly and sustainable seaweed biomass energy is under the spotlight as the future of renewable energy. However, seaweed culture primarily depends on inshore and research of offshore culture system is still in insufficient step. A seaweed culture technology for biomass production is required engineering and systematic study beyond the conventional empirical approach.
In this study, dynamic characteristics of seaweed culture facility for biomass production were analyzed by numerical simulation. To achieve the objective, Hydrodynamic simulation program, ANSYS-AQWA was used to numerical analysis. In order to analyze the dynamic characteristic of seaweed culture facility, the following approaches were performed. Firstly, a seaweed culture facility model was selected to rectangular frame type. The target model of seaweed culture facility consists of a frame part, culturing part and the mooring system was applied the compliant mooring system to reduce drift effect. Secondly, in order to analyze the characteristic of the dynamic response, RAO (response amplitude operator) was calculated. The RAO was calculated from the frequency-domain analysis and the characteristics of translational motion mode were investigated through comparing the RAO value by frequency components. Finally, time domain analysis was carried out to evaluate the response by wave load. The wave load in the numerical analysis was based on the JONSWAP spectrum and Airy wave. The mooring performance was evaluated by comparing the time series response obtained through the mooring variables.
Environment-friendly and sustainable seaweed biomass energy is under the spotlight as the future of renewable energy. However, seaweed culture primarily depends on inshore and research of offshore culture system is still in insufficient step. A seaweed culture technology for biomass production is required engineering and systematic study beyond the conventional empirical approach.
In this study, dynamic characteristics of seaweed culture facility for biomass production were analyzed by numerical simulation. To achieve the objective, Hydrodynamic simulation program, ANSYS-AQWA was used to numerical analysis. In order to analyze the dynamic characteristic of seaweed culture facility, the following approaches were performed. Firstly, a seaweed culture facility model was selected to rectangular frame type. The target model of seaweed culture facility consists of a frame part, culturing part and the mooring system was applied the compliant mooring system to reduce drift effect. Secondly, in order to analyze the characteristic of the dynamic response, RAO (response amplitude operator) was calculated. The RAO was calculated from the frequency-domain analysis and the characteristics of translational motion mode were investigated through comparing the RAO value by frequency components. Finally, time domain analysis was carried out to evaluate the response by wave load. The wave load in the numerical analysis was based on the JONSWAP spectrum and Airy wave. The mooring performance was evaluated by comparing the time series response obtained through the mooring variables.
목차
1. 서론 11.1 연구배경 및 필요성 11.2 연구 목적 및 내용 22. 해조류 양식시설의 운동 방정식 32.1 좌표계 정의 및 기본가정 32.2 이론의 정식화 42.2.1 지배방정식 및 경계조건 42.2.2 주파수영역 운동 방정식 62.2.3 시간영역 운동 방정식 72.2.4 유연부이 계류시스템 83. 해조류 양식시설 모델 및 해석 조건 103.1 해석모델 103.2 계류시스템 모델 123.3 환경하중의 적용 134. 수치해석 결과 154.1 주파수영역 해석 154.2 시간영역 응답해석 174.2.1 Case 1 (Mooring slope = 82。) 184.2.2 Case 2 (Mooring slope = 67。) 254.2.3 Case 3 (Mooring slope = 55。) 324.2.4 Case 4 (Mooring slope = 45。) 394.2.5 Case 5 (Mooring slope = 55。+ currnet) 464.2.6 Case 6 (Mooring slope = 45。+ currnet) 534.3 고유치 해석 604.3 결과 분석 625. 결론 68참고 문헌 70
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