基于xflow软件的风力叶片气动性能分析 -pg电子娱乐平台

i 基于xflow 软件的风力叶片气动性能分析 摘 要 随着各种经济的发展，能源的使用量越来越大，传统化石能源属于不可再 生能源，它的使用不仅会对环境造成污染也能加重温室效应等。因此，现在世 界各国都在大力推广各种可再生能源的利用以及使用各种政策鼓励其发展。其 中风力发电属于发展最迅速、规模最大，同时技术也相对其他的发电方式更加 的成熟。由于风力发电机组是在暴露的自然环境中长期运行，因此会受到很多 环境因素的影响，例如台风、沙尘暴、冰霜等等。而叶片作为风力发电机捕获 风能的重要元件，如果受到这些因素的影响，那它的气动性能将会大大降低， 最终导致风力发电机组的效率以及整个风场的收益也跟着降低。因此对于风力 机叶片气动性能分析是风力发电领域的一个重点研究问题，对于前期叶片的设 计包括结构设计和气动设计两个问题。现如今，随着计算机技术的发展，越来 越多的计算流体软件被运用进来，这对于风力发电机的研究领域具有重大的推 动作用。研究人员可以很好的利用这些软件分析一些新的理论、新的技术，为 这些尚未得到现场验证的新理论、新技术提供数据支撑。本文基于 xflow 软件 对风力机叶片的气动性能进行分析，结合软件进行数值仿真和风洞试验的研究 工作。 首先，本文通过风力机叶片翼型的一些基础理论分析得出一个具有良好气 动性能的翼型，然后利用三维建模软件对naca0015 翼型的叶片进行模型的建 立，最后利用模型进行风洞试验。基于 xflow 软件设置各种参数值，经过后处 理最终得到速度、压力等云图以及各种曲线图，利用这些后处理结果对风力发 电机叶片的气动性能的影响因素进行分析研究。得出了很多有用的结论，同时 也模拟出了风机运行时的情况。与传统的分析软件作对比，这种方法具有一定 的可靠性，可以很好的进行风力机叶片的气动性能分析。 ii 关键词：翼型；叶片的气动性能；风洞试验；xflow 软件。 iii title：pneumatic performance analysis of wind turbine blade based on xflow software abstract with the development of all kinds of economy, the use of energy is increasing. traditional fossil energy is non renewable energy. its use will not only pollute the environment, but also aggravate the greenhouse effect. therefore, all countries in the world are vigorously promoting the use of renewable energy and using various policies to encourage its development. among them, wind power is the fastest growing and largest scale, and its technology is more mature than other power generation methods. because the wind turbine is operated in the exposed natural environment for a long time, it will be affected by many environmental factors, such as typhoon, sandstorm, frost and so on. as an important component of wind energy capture, if the blade is affected by these factors, its aerodynamic performance will be greatly reduced, resulting in the efficiency of wind turbine and the income of the whole wind farm will also be reduced. therefore, the aerodynamic performance analysis of wind turbine blades is a key research issue in the field of wind power generation. the design of the early stage blades includes two issues: structural design and aerodynamic design. nowadays, with the development of computer technology, more and more computational fluid software has been used, which plays an important role in the research field of wind turbine. researchers can make good use of these software to analyze some new theories and technologies, and provide data support for these new theories and technologies that have not been verified on site. in this paper, based on xflow software, the aerodynamic performance of wind turbine blades is analyzed, and the numerical simulation and wind tunnel test are carried out. first of all, this paper obtains an airfoil with good aerodynamic performance through some basic theoretical analysis of the wind turbine blade airfoil. then, the three-dimensional modeling software is used to build the model of naca0015 airfoil blade. finally, the model is used for wind tunnel test. based on the xflow iv software to set various parameter values, after the post-processing, the velocity, pressure and other cloud charts as well as various curves are finally obtained. using these post-processing results, the influencing factors of the aerodynamic performance of the wind turbine blades are analyzed and studied. a lot of useful conclusions are obtained, and the operation of the fan is simulated at the same time. compared with the traditional analysis software, this method has a certain reliability and can be used to analyze the aerodynamic performance of wind turbine blades. keywords:airfoil; aerodynamic performance of blade; wind tunnel test; xflow software 目 录 目 录 摘 要 .......................................................................................................................... i abstract ...................................................................................................................... iii 第1 章 绪 论 ....................................................................................................... - 1 - 1.1 研究背景及意义 ....................................................................................... - 1 - 1.2 国内外研究现状 ....................................................................................... - 5 - 1.2.1 新翼型的设计 ................................................................................. - 5 - 1.2.2 风力机叶片的气动设计 ................................................................. - 6 - 1.2.3 软件研究情况 ................................................................................. - 7 - 1.3 课题的研究内容及目的 ........................................................................... - 8 - 第2 章 基础理论及参数设置 ............................................................................. - 10 - 2.1 叶片翼型基础理论 ................................................................................. - 10 - 2.1.1 贝茨（betz）理论 ........................................................................ - 10 -