EAGER - Exploratory Investigation of Active Vibration and Flow Control in Wind Turbine Blades

EAGER - 风力涡轮机叶片主动振动和流量控制的探索性研究

• 批准号: 0964989
• 负责人: Michael Amitay
• 金额: $ 10万
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0964989&HistoricalAwards=false
• 关键词: EAGER; Exploratory; Investigation; Active; Vibration

0941859 Amitay Summary Wind energy is the fastest growing source of electrical energy in the world. The current US target is to have wind provide 20% of the nation electricity by 2030. Marching towards this ambitious target would necessarily involve larger turbines than what is commonly used today, in order to more efficiently capture the wind energy. However, large turbines also come with significant technical challenges. The structural vibration of the turbine could compromise wind energy capture, generate undesirable acoustic emission, and cause blade fatigue and premature failure. Intellectual Merit: The goal of this feasibility research is to explore the application of active flow control to reduce structural vibrations during dynamic motion of the blade. As part of the project the PI will characterize and analyze the flow field around the blade, the blade/flow interaction, and use the result to optimize blade design, improve turbine operation, and enhance the overall system safety. The proposed research will develop full 3D characterization of the flow field during a flapping/pitching blade under the activation of active flow control via arrays of synthetic jets to mitigate blade vibrations and to achieve improved performance in a variety of real-world conditions. This research aims to achieve the following objectives: (1) reduce vibrations at all operating conditions, and (2) reduce loads and vibrations on the blades during gusts. These objectives will ameliorate blade fatigue, and increase energy capture while maintaining safe operating limits. At high wind speed and/or wind gusts, flow control strategy will be developed to reduce blade loading and vibrations. Various sensors, mounted on the blades, would allow determination of the environmental operating conditions, blade structural state, and flow condition. Broader Impact: The proposed research will result in longer life-time of the blades, as well as enhanced power capture by enabling the design of larger turbines and improving operation under various dynamic conditions. The proposed project also has a strong educational component. Wind energy offers a timely and intriguing application and opportunity to engage and attract students. The PI will incorporate this research into his classroom to include the interdisciplinary nature of the project, involving fluid/structure interaction and aerodynamics. Prof. Amitay is a member of RPI's newly funded NSF GK-12 outreach program on Energy and Environment. He recently recruited a Hispanic Ph.D. student that has been working 15 hours a week with a high school teacher from Troy, NY in a wind energy related project. Furthermore, one grad student (Victor Maldonano, Hispanic) as well as an undergraduate student (Becca Ostman, female) will be appointed as research assistants for the duration of the program. Finally, Amitay is one of the directors of the Summer at RPI program and has been instructing short summer camps for middle and high school students in the last two summers on the Wonderful World of Flight. He will propose Wind Energy as next year's camp theme.

0941859 Amitay摘要风能是世界上最快的电能来源。目前的美国目标是在2030年到2030年提供全国电力的20％。向这一雄心勃勃的目标迈进，一定要比当今常用的涡轮机更大，以便更有效地捕获风能。但是，大型涡轮机还带来了重大的技术挑战。涡轮机的结构振动可能会损害风能捕获，产生不良的声发射，并导致叶片疲劳和过早故障。智力优点：这项可行性研究的目的是探索主动流控制的应用，以减少刀片动态运动期间的结构振动。作为项目的一部分，PI将表征和分析刀片周围的流场，刀片/流相互作用，并使用结果来优化刀片设计，改善涡轮机操作并增强整体系统安全性。拟议的研究将通过合成射流的阵列在主动流控制下激活叶片，以减轻叶片振动，并在各种现实世界中的各种现实情况下实现改善的性能，从而在激活的流动控制下，在激活的流动控制下进行全3D表征。这项研究旨在实现以下目标：（1）在所有操作条件下减少振动，以及（2）减少阵风期间叶片的负载和振动。这些目标将改善叶片疲劳，并增加能量捕获，同时保持安全的操作限制。在高风速和/或风阵中，将制定流量控制策略，以减少叶片载荷和振动。安装在刀片上的各种传感器将允许确定环境工作条件，刀片结构状态和流量状况。更广泛的影响：拟议的研究将导致叶片的寿命更长，并通过在各种动态条件下实现较大的涡轮机的设计并改善操作来增强功率捕获。拟议的项目还具有强大的教育组成部分。风能提供了及时而有趣的应用程序和机会来吸引和吸引学生。 PI将将这项研究纳入他的教室，包括该项目的跨学科性质，涉及流体/结构的相互作用和空气动力学。 Amitay教授是RPI新资助的NSF GK-12能源与环境外展计划的成员。他最近招募了西班牙裔博士学位。每周工作15个小时的学生与来自纽约州特洛伊的一位高中老师与风能相关的项目。此外，在该计划期间，将任命一名研究生（Victor Maldonano，西班牙裔）以及一名本科生（Becca Ostman，女）为研究助理。最后，Amitay是RPI计划夏季的董事之一，在最后两个夏天，一直在指导中学和高中生的短期夏令营，以了解“奇妙的飞行世界”。他将提出风能为明年的营地主题。