单柱式浮式风机动力性能机理研究

发布时间：2018-03-03 14:12

本文选题：浮式风机　切入点：动力响应　出处：《上海交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着世界能源需求的增长，和人们对环境问题的关注，清洁的可再生能源已成为近期的研究热点。清洁的可再生能源主要包括风能，波浪能，潮汐能，太阳能以及生物能等形式。其中，，风能已成为近年来发展最快的能源形式之一。受到选址、噪声和视觉污染等因素的影响，工业界和研究者开始由陆上风电场的开发利用转向对海上风电场的研究。随着水深的增加，海上风电场的支撑形式逐渐由固定式支撑基础过渡为浮式支撑基础。对海上浮式风机来说，它是一个综合的水动力-空气动力-弹性体-控制复杂系统，目前还面临着许多工程挑战和问题需要解决。本文主要利用数值计算方法，对一种典型的单柱式Spar作为支撑结构的5MW风机进行了整体动力响应研究。探讨了研究对象在不同海况条件下的运动和载荷响应性能，并进一步对浮式风机模型试验设计进行了研究，讨论了其面临的尺度效应问题，提出了初步的解决方案。本文具体研究内容如下： 1.对目前海上浮式风机的设计概念进行了介绍，重点介绍了海上浮式风机动力响应的不同研究方法及研究现状。 2.运用频域势流理论，对OC3-Hywind Spar浮体进行了频域水动力性能计算，得到了其附加质量、阻尼系数和一阶波浪力等频域水动力系数。通过频域势流计算，对OC3-HywindSpar的水动力性能进行初步评估，并为后续整个风机系统的耦合时域计算做出准备。 3.应用整体时域计算程序，对OC3-Hywind Spar浮体作为支撑结构的NREL5MW风机进行了整体动力响应计算，得到了其在不同海况条件下的运动和载荷响应性能结果，并讨论了风浪载荷对系统动力响应性能的不同影响。 4.对浮式风机水池模型试验的相似准则进行了讨论分析，提出了关于雷诺数不相似所造成的尺度效应问题，并提出了初步的解决方案。本文的研究内容对海上浮式风机在不同海况下的整体动力响应特性进行了研究，对未来海上浮式风机系统的设计和分析都有较好的参考意义。
[Abstract]:With the increase of energy demand in the world and people's attention to environmental problems, clean renewable energy has become a hot topic in recent years. Clean renewable energy mainly includes wind energy, wave energy, tidal energy. Wind energy has become one of the fastest-growing forms of energy in recent years. It is affected by factors such as location, noise and visual pollution. Industry and researchers began to shift from the development and utilization of onshore wind farms to offshore wind farms. The support form of offshore wind farm is gradually changing from fixed support foundation to floating support foundation. For offshore floating fan, it is a complex system of hydrodynamics, aerodynamics, elastomer and control. At present, there are still many engineering challenges and problems to be solved. In this paper, the dynamic response of a typical 5MW fan with a single column Spar as its supporting structure is studied by numerical method, and the motion and load response performance of the studied object under different sea conditions is discussed. Furthermore, the model test design of floating fan is studied, the scale effect problem is discussed, and a preliminary solution is put forward. The specific contents of this paper are as follows:. 1. The design concept of floating fan at sea is introduced, with emphasis on different research methods and research status of dynamic response of floating fan at sea. 2. Using the theory of potential flow in frequency domain, the hydrodynamic performance of OC3-Hywind Spar floating body in frequency domain is calculated, and its additional mass, damping coefficient and wave force in frequency domain are obtained. The hydrodynamic performance of OC3-HywindSpar is preliminarily evaluated and the coupling time domain calculation of the whole fan system is prepared. 3. The integral dynamic response of the OC3-Hywind Spar fan with the floating body as the supporting structure is calculated by using the whole time domain calculation program, and the results of its motion and load response under different sea conditions are obtained. The effects of wind and wave loads on the dynamic response of the system are discussed. 4. The similarity criterion of model test of floating fan pool is discussed and analyzed, and the scale effect caused by Reynolds number dissimilarity is put forward, and a preliminary solution is put forward. In this paper, the overall dynamic response characteristics of floating fan at sea under different sea conditions are studied, which has a good reference significance for the design and analysis of floating fan system on the sea in the future.
【学位授予单位】：上海交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM614;U674.38

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