Quantification of Wind-Driven Surface Water Transport Process for Aircraft Icing Studies

飞机结冰研究中风力驱动的地表水输送过程的量化

• 批准号: 1435590
• 负责人: Hui Hu
• 金额: $ 28.5万
• 依托单位: Iowa State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1435590&HistoricalAwards=false
• 关键词: Quantification; Wind; Driven; Surface; Water

PI: Hu, HuiProposal Number: 1435590The proposed research will explore in detail the conditions that lead to icing on aircraft wings. The flow of water, ice and air around the wings of an airplane will be observed with an experimental technique that will be developed as part of this proposal. The experimental facility is rather unique for a US academic institution. In addition to fundamental knowledge on the process of icing, understanding and predicting this process can lead to both safer and cheaper operation of aircrafts. Connections to local science and math teachers and outreach activities for K-12 schools are also proposed. The PI proposes to develop a new aircraft icing and demo experimental module that would be used in outreach activities to attract young students to engineering and science.The goal of the PI is to develop a novel technique to quantify the unsteady surface water transport process driven by boundary layer airflows over ice accreting airfoil/wing surfaces leading to safer and more efficient operation of aircrafts in icing conditions. This new experimental technique (Digital Image Projection Sensing, DIPS) is based on structured light triangulation, which is similar to stereovision techniques that provide 3D images, but it involves replacing one of the cameras for stereo imaging with a digital projector. If successful, the proposed DIPS technique will be a non-intrusive technique capable of achieving instantaneous measurements of thickness distributions of surface water droplet/rivulet flows (i.e., unsteady surf ace water transport process) over ice accreting airfoil/wing surfaces. This will provide the foundation to address challenging problems involving multiphase flow interactions with solidification. The effects of the surface properties (e.g., hydrophobicity and thermal conductivity) of aircraft wings on the surface water transport and ice formation will be studied in detail.

PI：Hu, Hui 提案编号：1435590 拟议的研究将详细探讨导致飞机机翼结冰的条件。飞机机翼周围的水、冰和空气的流动将通过作为该提案的一部分开发的实验技术来观察。对于美国学术机构来说，该实验设施相当独特。 除了关于结冰过程的基础知识之外，理解和预测这一过程可以使飞机的运行更安全、更便宜。还提议与当地科学和数学教师建立联系，并为 K-12 学校开展外展活动。该项目负责人提议开发一种新的飞机结冰和演示实验模块，用于外展活动，以吸引年轻学生学习工程和科学。项目负责人的目标是开发一种新技术来量化由积冰翼型/机翼表面上的边界层气流驱动的不稳定表面水输送过程，从而使飞机在结冰条件下更安全、更高效地运行。这项新的实验技术（数字图像投影传感，DIPS）基于结构光三角测量，类似于提供 3D 图像的立体视觉技术，但它涉及用数字投影仪替换其中一个用于立体成像的相机。如果成功，所提出的 DIPS 技术将是一种非侵入式技术，能够实现对积冰翼型/机翼表面上的表面水滴/小溪流（即不稳定的表面水传输过程）的厚度分布的瞬时测量。这将为解决涉及多相流与凝固相互作用的挑战性问题奠定基础。 将详细研究飞机机翼的表面特性（例如疏水性和导热性）对表面水输送和冰形成的影响。

项目成果

Quantification of the 3D shapes of the ice structures accreted on a wind turbine airfoil model

• DOI: 10.1007/s12650-019-00567-4
• 发表时间: 2019-05
• 期刊: Journal of Visualization
• 影响因子: 1.7
• 作者: Linyue Gao;R. Veerakumar;Yang Liu;Hui Hu

A hybrid strategy combining minimized leading-edge electric-heating and superhydro-/ice-phobic surface coating for wind turbine icing mitigation

• DOI: 10.1016/j.renene.2019.03.112
• 发表时间: 2019-09-01
• 期刊: RENEWABLE ENERGY
• 影响因子: 8.7
• 作者: Gao, Linyue;Liu, Yang;Hu, Hui
• 通讯作者: Hu, Hui