Icing Physics Studies Pertinent to Wind Turbine Icing and De/Anti-icing

1064196HuWind涡轮机结冰是寒冷天气下对风力涡轮机完整性的最大威胁。在这项拟议的研究中，开展了一项综合的实验、数值和理论研究，以量化与风力机结冰现象相关的重要微物理过程。为了更准确地预测风力机叶片表面的结冰和结冰，进行了详细的实验研究，以考察结冰表面上未冻结的地表水膜和溪流的瞬变行为，以阐明潜在的物理机制。为了配合实验工作，还进行了计算和理论研究，包括空气、水和冰之间三相非线性耦合的数值模拟和全面的渐近建模。智力优势：通过阐明潜在的物理学，拟议的研究将显著提高我们对与风力机结冰现象相关的重要微物理过程的理解。更好地理解重要的微物理过程将使我们能够改进现有的结冰模型，以便更准确地预测风力机叶片上的结冰和结冰。来自拟议研究的新发现还可用于开发针对风力涡轮机结冰应用量身定做的有效和强大的防/除冰策略，以确保风力涡轮机在寒冷天气中更安全、更高效地运行。广泛影响：拟议的研究计划将被纳入爱荷华州的课程(本科生和研究生)。拟议研究得出的结果将被广泛传播，以促进结冰物理和风力涡轮机技术的知识库。将招募女性和少数族裔学生参与拟议的研究，以促进代表人数不足的群体参与科学和工程。计划开展各种外展活动，让从小学到中学的教师和学生，以至广大公众，更多地了解可再生能源和风力发电机技术及其对我们日常生活的重要性。

1064196HuWind turbine icing represents the most significant threat to the integrity of wind turbines in cold weather. In this proposed research, an integrated experimental, numerical and theoretical study is carried out to quantify important micro-physical processes pertinent to the wind turbine icing phenomena. More specially, detailed experimental investigations are conducted to examine the transient behavior of unfrozen surface water film and rivulet flows on ice accreting surfaces to elucidate underlying physics for more accurate prediction of ice formation and accretion on the surfaces of wind turbine blades. Computational and theoretical investigations, which include numerical simulations of the three-phase nonlinear coupling between air, water and ice as well as comprehensive asymptotic modeling of those processes, are also conducted to coordinate with the experimental work.Intellectual Merit: By elucidating the underlying physics, the proposed research would significantly improve our understanding about the important micro-physical processes pertinent to wind turbine icing phenomena. A better understanding of the important micro-physical processes will enable us to improve current ice accretion models for more accurate prediction of ice formation and ice accretion on wind turbine blades. The new findings derived from the proposed research can also be used to develop effective and robust anti-/de-icing strategies tailored for wind turbine icing applications to ensure safer and more efficient operation of wind turbines in cold weather.Broader Impact: The proposed research program will be incorporated into the Iowa State's curricula (both undergraduate and graduate). The findings derived from the proposed research will be disseminated broadly to contribute to the knowledge base of icing physics and wind turbine technology. Female and minority students will be recruited to work on the proposed research to promote the participation of underrepresented groups in science and engineering. Various outreach activities are planned to impart K-12 teachers and students, and by extension, the public at large, a greater awareness of renewable energy and wind turbine technology and their importance to our daily lives.