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자료유형
학술대회자료
저자정보
김윤호 (한국해양연구원) 성홍근 (한국해양연구원) 조석규 (한국해양연구원) 정희운 (서울대학교) 최항순 (울대학교)
저널정보
한국해양환경·에너지학회 한국해양환경·에너지학회 학술대회논문집 2012년도 한국해양과학기술협의회 공동학술대회
발행연도
2012.5
수록면
1,388 - 1,392 (5page)

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이 논문의 연구 히스토리 (2)

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This study is constructed to investigate the sloshing effect on the motions of a two-dimensional rectangular floater experimentally. There are two main categories. First, only roll motion is permitted and the other motions are firmly resticted. Secon,d sway and roll motions are are just allowed simultaneously with heave motion prevented. Sway motion is occurred along the flurre"s upper rail, while roll motion is performed at the center bearing of the model. Experiments are performed in the 2D flume at Seoul Nat"l University. The filling ratios are changed from empty to 50% and for the second experimental case, the ballast conditions are varied to quantify the rail friction effect. All tests are carried out under regular wave conditions. The motions measured by a non-contact camera, which can trace two different marks on the model accurately. The steady-state sway and roll motions are filtered out by post-processing. The spring system is installed to prevent the model drift off. For the first case, it is found that as the filling ratio is increased, the roll natural frequency becomes lower. And the sloshing effect is doserved at the vicinity of roll natural frequency and sloshing natural one, but the amount is not that much significant as the sway motion. For the second case, sway motion is dominant and roll motion is almost diminished except for cases near the sloshing natural frequency. Between 4.0~7.0rad/s, which is the interval between roll natural frequency and sloshing natural one, it is found that coupling of two motions leads the roll motion"s phese shift and finally internal fluid tank acts as ART(Anti-Rolling Tank) precisely.

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ABSTRACT
1. 서론
2. 실험 구성
3. 1자유도-횡 동요 운동실험
4. 2자유도-수평 및 횡 동요 실험
5. 결론
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UCI(KEPA) : I410-ECN-0101-2013-472-003622329