Flow Turbulence and Renewable Energy

湍流和可再生能源

• 批准号: 203025-2012
• 负责人: Ting, David
• 金额: $ 1.46万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=523319
• 关键词: Flow; Turbulence; Renewable; Energy

Renewable energies such as wind and solar are verily at the mercy of the environmental turbulent wind that they are subject to. Strong and steady wind can furnish abundant clean energy via the promising wind turbines. The roles of flow fluctuations, however, are less obvious. Flow turbulence may break down the well-organized vortical flow structures of the wake, and hence, possibly mitigate the adverse effects of the wake on the downstream wind turbines. In fact, some turbulent flow can delay the aerodynamic stall and improve airfoil performance. On the other hand, pronounced fluctuations in the wind can lead to significant structural fatigue along with reduced wind power capturing. Similarly, the structures housing solar panels need to withstand the wind loads, among which the fluctuating drag and lift are of primal importance. While wind may be undesirable from the standpoint of structural integrity, it is needed to keep the solar panel cool, especially on a hot summer afternoon, to capitalize higher energy conversion efficiency. Overcoming these and other practical challenges requires both engineering ingenuities and improved fundamental understanding of the ever-perplexing, omnipresent flow turbulence. At the fundamental level, clean, isotropic turbulence remains a critical element which demands better understanding. Extreme diligence both in experimentation and in data reduction, along with improved analyses, are necessary in enhancing progress along this path. The proposed research consists of coupled parallel fundamental-application approaches specifically aimed at continuous improvement of the aforementioned clean energy technologies and progressive revelation of engineering turbulence.

诸如风和太阳能之类的可再生能源确实受到环境湍流风的摆布。强而稳定的风能通过有前途的风力涡轮机提供丰富的清洁能量。但是，流动波动的作用不太明显。流动湍流可能会破坏尾流的井眼流量结构，因此可能减轻尾流对下游风力涡轮机的不利影响。实际上，某些湍流会延迟空气动力学摊位并改善机翼性能。另一方面，风中明显的波动会导致严重的结构疲劳，并减少风力捕获。同样，结构壳体太阳能电池板需要承受风荷载，其中波动的阻力和升力至关重要。从结构完整性的角度来看，风可能是不希望的，但需要保持太阳能电池板凉爽，尤其是在炎热的夏季下午，以利用更高的能量转换效率。克服这些和其他实践挑战需要工程技术，并提高对朴实，无所不在的流动湍流的基本理解。在基本层面上，干净，各向同性的湍流仍然是需要更好理解的关键要素。在实验和减少数据中的极端勤奋以及改进的分析，对于增强沿这条路径的进步都是必要的。拟议的研究包括耦合的平行基本应用方法，专门针对上述清洁能源技术的持续改进和工程湍流的逐步启示。