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首页> 外文期刊>Ocean Engineering >Wave interaction with a tethered buoy: SPH simulation and experimental validation
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Wave interaction with a tethered buoy: SPH simulation and experimental validation

机译：波浪与系留浮标的相互作用：SPH模拟和实验验证

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摘要

Understanding the interaction between surface waves and floating, moored structures is an important problem for the design of offshore structures. Experimental analysis has traditionally been used to study these problems, but using computational modelling could potentially reduce the number of experimental iterations required. In this paper we investigate the use of Smoothed Particle Hydrodynamics as a method for modelling these problems and thus reducing the number of experiments required. Validation data is obtained from generic experiments that contain the important features of wave-structure interaction. A moored spherical buoy oscillating both through and across a free surface, as well as interacting with an incident sinusoidal wave train are discussed and companion SPH simulations are run. We show here that SPH is capable of achieving accurate predictions of the buoys motion when interacting with the free surface with appropriate particle resolutions. An initial transient motion was observed in the experiments as a long period oscillation of the buoy at its surge natural frequency. This transient motion was also predicted by SPH, but at reduced amplitude. Overall SPH was determined to be a good choice for modelling surface and structure interactions and we provide guidelines on appropriate particle resolution for such interactions.
机译：理解表面波与浮式，系泊结构之间的相互作用是海上结构设计的重要问题。传统上，已经使用实验分析来研究这些问题，但是使用计算模型可以潜在地减少所需的实验迭代次数。在本文中，我们研究使用平滑粒子流体动力学作为对这些问题进行建模的方法，从而减少所需的实验次数。验证数据是从通用实验中获得的，这些实验包含波结构相互作用的重要特征。讨论了一个穿过自由表面振荡并穿过自由表面的系泊球形浮标，以及与入射正弦波列的相互作用，并进行了伴随SPH仿真。我们在这里显示，当SPH与具有适当粒子分辨率的自由表面相互作用时，能够实现浮标运动的准确预测。在实验中观察到初始瞬态运动是浮标在其喘振固有频率下的长时间振荡。 SPH也预测了此瞬态运动，但幅度减小了。整体SPH被确定为建模表面和结构相互作用的理想选择，我们提供了有关此类相互作用的适当粒子分辨率的指南。

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