毕业论文移动版

摘要目前世界上能源危机的问题是严峻的，低碳、节能和开发利用可再生能源将成为世界能源发展的主题。开发者首先注意到的是海洋,因为海洋蕴含巨大的能量，并且能源极为丰富。波浪能在有波浪的地方就存在，所以它的储量非常大，分布非常广，获取方式多种多样，这些优点使其成为目前最有发展前景的海洋能源之一。当今，运用振荡浮子来摄取波浪中的能量、以机械液压为能量的传递模式的第三代波浪发电装置已经成为波浪能开发的主流和热点，同时，海洋中波浪对圆柱及圆柱加浮子的系统的受力情况的研究都对这种波浪能发电装置的继续深入探索提出了很迫切的要求。本文对规则波作用下浮子对涡流运动的影响进行了较为全面的考察。数值模拟中选取了常见的圆柱形浮子，基于莫里森方程求解水平波浪力以及横向力;对浮子进行受力分析时考虑能量输出负载对装置的影响，建立流体力学方程以及边界方程。84110

本次对装置进行了数值模拟试验，通过监测浮子上、下的运动过程，明确了有无浮子对立柱影响的关系，试验结果与理论分析结果吻合;本文通过模拟规则波作用下浮子在波浪中圆柱的受力情况，分析了浮子对圆柱或整个系统的影响。

 基于不可压缩N-S方程和VOF自由液面追踪方法，建立了适用于振荡浮子波能发电装置的原型装置的数值模拟平台。理论分析及数值模型实验结果验证显示，在该水槽中的模拟试验不仅可以反映规则波对浮子运动速度的影响，对于各种状态下圆柱的受力情况描述也较准确。

 本文综合运用理论分析和运用OpenFOAM软件进行数值模拟的方法，确定了规则波作用下对圆柱及圆柱加浮子的整个系统的影响。

毕业论文关键词:振荡浮子，波浪发电装置，水动力学，莫里森公式

Abstract The energy crisis problem is serious in the world today, low carbon, energy conservation and the development and utilization of renewable energy will be the theme of the world's energy development。 The developers are the first to notice is sea, because the ocean contains huge energy。 Waves can exist, in a place like a wave is very large, so its reserves distribution is very wide, there are so many ways to obtain, these advantages make it become one of the most promising Marine energy。 Today, using the oscillating float to absorb energy from the waves, for mechanical and hydraulic energy transfer mode of the third generation of wave power device has become the mainstream of the development of wave energy and hot spots, at the same time, the shape selection of float and how devices both in the ocean of research for this kind of wave energy power generation device further explore raised very urgent requirement。 In this paper, under the action of the regular wave float to the influence of vortex motion are discussed in a comprehensive investigation。 The numerical simulation of common cylindrical float, based on the morison equation horizontal wave force and lateral force; Stress analysis was carried out on the float when considering the influence of the energy output load on equipment, fluid mechanics equation and boundary equation。 

The device for the numerical simulation experiment, through the process of monitoring the movement of the float up, down, has been clear about the presence of float on the relationship between the pillar impact, test results accord with the results of theoretical analysis; Based on the simulation under the action of regular waves float in the wave force of the cylinder, the float on cylinder or the influence of the whole system are analyzed。 

Based on incompressible navier-stokes equation and VOF free surface tracking method, established the prototype of the oscillating float wave energy power generation device for installation of the simulation platform。 Theoretical analysis and numerical model, according to the experimental results verify in the flume simulation experiment can not only reflect the effects of regular wave to float movement speed, force of the cylinder for various state description are accurate。  (责任编辑：qin)