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논문 기본 정보

자료유형
학술저널
저자정보
Guha, Amitava (Marine Dynamics Laboratory, Department of Ocean Engineering, Texas A&M University) Falzarano, Jeffrey (Marine Dynamics Laboratory, Department of Ocean Engineering, Texas A&M University)
저널정보
테크노프레스 Ocean systems engineering Ocean systems engineering 제6권 제4호
발행연도
2016.1
수록면
305 - 324 (20page)

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Wave load prediction at zero forward speed using finite depth Green function is a well-established method regularly used in the offshore and marine industry. The forward speed approximation in deep water condition, although with limitations, is also found to be quite useful for engineering applications. However, analysis of vessels with forward speed in finite water depth still requires efficient computing methods. In this paper, a method for analysis of wave induced forces and corresponding motion on freely floating three-dimensional bodies with low to moderate forward speed is presented. A finite depth Green function is developed and incorporated in a 3D frequency domain potential flow based tool to allow consideration of finite (or shallow) water depth conditions. First order forces and moments and mean second order forces and moments in six degree of freedom are obtained. The effect of hull flare angle in predicting added resistance is incorporated. This implementation provides the unique capability of predicting added resistance in finite water depth with flare angle effect using a Green function approach. The results are validated using a half immersed sphere and S-175 ship. Finally, the effect of finite depth on a tanker with forward speed is presented.

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