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首页> 外文会议>International Conference on Offshore Mechanics and Arctic Engineering 2007(OMAE2007) vol.4; 20070610-15; San Deigo,CA(US) >THE RADIATION DAMPING COEFFICIENTS FOR SURGE, HEAVE AND PITCH MOTION IN FREE SURFACE
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THE RADIATION DAMPING COEFFICIENTS FOR SURGE, HEAVE AND PITCH MOTION IN FREE SURFACE

机译：自由表面上的波动，波动和俯仰运动的辐射阻尼系数

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摘要

In order to predict the ship motion in a seaway, we need to determine the wave excitation forces and hydrodynamic coefficients. Currently many commercial programs based on various numerical procedures are used to predict the hydrodynamic coefficients. However special knowledge and skills for accurate modeling are required to be able to use commercial programs. Also in addition, the run time is rather excessive. This paper shows a simplified analytical procedure to predict the hydrodynamic radiation damping coefficients. In the formulation of the wave damping force due to oscillatory rigid-body motion, the use of wave radiation component with wave pattern analysis and of the two-dimensional motion energy conservation principle are made. In this paper, a procedure will be described to predict the motions of a barge geometry in time domain. At the initial stage of the development, a rectangular barge form was used and the model developed is based on strip theory. Numerical results for the radiation damping coefficients are presented and compared with the results of experiments obtained by Vughts.
机译：为了预测船舶在海道中的运动，我们需要确定波浪激励力和流体动力系数。当前，基于各种数值程序的许多商业程序被用于预测流体力学系数。但是，要能够使用商业程序，就需要进行精确建模的特殊知识和技能。另外，运行时间相当长。本文显示了一种简化的分析程序来预测流体动力辐射的阻尼系数。在建立由振动刚体运动引起的波阻尼力时，利用了具有波型分析的波辐射分量和二维运动能量守恒原理。在本文中，将描述一种程序来预测时域中驳船几何的运动。在开发的最初阶段，使用了矩形驳船形式，并且所开发的模型基于带状理论。给出了辐射衰减系数的数值结果，并将其与Vughts获得的实验结果进行了比较。

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