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

1064196 HuWind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，进行了综合实验，数值和理论研究，以量化重要的微物理过程相关的风力涡轮机结冰现象。 更特别的是，详细的实验研究进行检查的瞬态行为的未冻结的表面水膜和溪流流的积冰表面上阐明的基础物理更准确地预测风力涡轮机叶片表面上的冰的形成和积冰。计算和理论研究，其中包括空气，水和冰之间的三相非线性耦合的数值模拟以及这些过程的综合渐近建模，也进行了与实验工作的协调。通过阐明基本的物理原理，拟议的研究将大大提高我们对重要的微观，与风力涡轮机结冰现象相关的物理过程。 更好地理解重要的微观物理过程将使我们能够改进现有的积冰模型，以更准确地预测风力涡轮机叶片上的结冰和积冰。从拟议的研究中得出的新发现也可以用来开发有效的和强大的防/除冰策略量身定制的风力涡轮机结冰的应用，以确保更安全，更有效地运行风力涡轮机在寒冷的天气。更广泛的影响：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）。从拟议的研究中得出的结果将被广泛传播，以促进结冰物理学和风力涡轮机技术的知识基础。 将招募女性和少数民族学生从事拟议的研究，以促进代表性不足的群体参与科学和工程。计划开展各种外展活动，向K-12教师和学生以及广大公众宣传可再生能源和风力涡轮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.