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首页> 外文期刊>Ocean Engineering >Further study on the Instantaneous Rotation Center in Pitch and its distribution in space for a moored vessel submitted to head regular waves
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Further study on the Instantaneous Rotation Center in Pitch and its distribution in space for a moored vessel submitted to head regular waves

机译：进一步研究静脉旋转中心及其在常规波线的停泊容器中的空间分布

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This paper investigates the position of the instantaneous center of rotation in pitch response of a moored vessel submitted to regular head waves. The vessel is assumed to respond only in surge, heave and pitch, which allows a 2D approach in the x-z plane due to symmetry. The concept is formalized via an analytical approach in a previous study, showing that even though this point is time dependent it will always be located along a well-defined straight line in space for a moored vessel submitted to linear regular head waves. This study presents an analytical formulation to describe the distribution of these points along the straight line following a Cauchy probability density function. The concept of the Most Often Instantaneous Rotation Center in Pitch is introduced as the peak of said probability density function, which might arise as an interesting tool for quickly estimating the points of minimum amplitude of motion of a moored vessel submitted to head regular waves during one cycle. The paper also presents numerical data obtained through commercial software based on linear potential theory as well as experimental data from tests performed in a narrow wave channel to validate the proposed approach.
机译：本文调查了在提交常规头波的停泊船的俯仰响应中瞬时旋转中心的位置。假设船只仅在浪涌，升降和间距中响应，这允许由于对称性允许在X-Z平面中进行2D接近。该概念通过先前研究中的分析方法正式化，表明即使这一点是依赖于时间，它将始终沿着在被提交到线性常规头波的停泊容器中定义明确的直线。该研究提出了一种分析制剂，以描述Cauchy概率密度函数之后沿着直线沿着直线分布这些点的分布。引入最常用的旋转中心的概念作为所述概率密度函数的峰值，这可能是作为一种有趣的工具，用于快速估计停泊船舶在一个常规波的停泊容器的最小运动点的点循环。本文还介绍了通过基于线性势理论通过商业软件获得的数值数据，以及来自在窄波通道中的测试的实验数据，以验证所提出的方法。

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