楔形体在波浪中自由入水的数值模拟

发布时间：2018-06-22 12:22

本文选题：楔形体 + 波浪　；参考：《海洋工程》2017年05期

【摘要】：物体入水时波浪的影响不可忽略,基于流体力学模型采用VOF法,并利用自定义函数,模拟了楔形体的自由入水过程;同时结合推波板原理及海绵层消波理论实现了数值水槽的造消波,完成了波浪中楔形体自由入水的模拟,计算了楔形体入水时所受的水作用力、自由液面变化及物面压强分布等,研究了不同波高、周期以及在波浪不同位置入水时对楔形体的影响。结果表明:本文建立的数值模型可很好地模拟楔形体入水造成的射流及空泡的形成发展过程,波浪对楔形体入水的影响主要由波浪内部流场变化及表面波形决定,在波浪不同位置处入水对楔形体受力及入水形态均有较大影响。
[Abstract]:The effect of the wave is not negligible when the object enters the water. Based on the fluid mechanics model, the VOF method is used and the custom function is used to simulate the free water entry process of the wedge. At the same time, the wave forming of the numerical sink is realized by the principle of the wave plate and the theory of the sponge layer wave elimination. The simulation of the free water entry of the wedge in the wave is completed and the wedge shape is calculated. The water force, the free surface change and the pressure distribution of the surface, the influence of the wave height, the cycle and the water entering the water on the wedge is studied. The results show that the numerical model established in this paper can well simulate the formation and development of the ejection and cavitation caused by the wedge entering water, and the wave to the wedge shape. The effect of water entry is mainly determined by the change of the internal flow field and the surface wave form. The water entry in different positions of the waves has a great influence on the force and the form of the water entering the wedge.
【作者单位】：国家海洋环境监测中心;大连理工大学海岸及近海工程实验室;
【基金】：国家自然科学基金(51709054) 海洋公益性行业科研专项资助项目(201405025;201505019)
【分类号】：O353.2

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