Fluidic Energy Harvesters: A case of Aero-Electro-Mechanical Interaction

流体能量采集器：航空机电相互作用案例

• 批准号: 1033117
• 负责人: Yiannis Andreopoulos
• 金额: $ 36.47万
• 依托单位: CUNY City College
• 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: 2010-08-15 至 2014-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1033117&HistoricalAwards=false
• 关键词: Fluidic; Energy; Harvesters; case; Aero

The proposed work will explore the performance of unique configurations of harvesting wind energy devices for the first time with the use of piezoelectric materials optimally located inside a flow field. The available power in a flowing fluid is proportional to the cube of its velocity, which in the case of turbulent flows is proportional to the cube of a characteristic length scale and to the cube of a characteristic strain rate/frequency scale. This feature creates a unique opportunity to generate a substantial amount of energy by using piezoelectric generators, which are AC-coupled devices, to convert fluid kinetic energy to electrical energy. This energy can be used for continuously powering very small electronic devices or can be rectified and stored for intermittent use. This requires fundamental understanding of the three-way coupled interaction between the air motions, the dynamics of the vibrating structure and the electrical field of the piezoelectric material. Detail mapping of the flow fields will provide information on the flow field where energy harvesting is at maximum or optimal. The work that emerges from this proposal will provide the basis for designing generators that can be used to power small scale electronic devices. Although the anticipated energy harvesting is small, continuous harvesting at multi points may be more productive. Implementing such a strategy would be possible at the end of the proposed research when issues related to scaling up the available results to real-life scale, will be better understood. The present research program and the novel experimental setup have already attracted the interests of a number of undergraduate and graduate students and the general public. The experimental setup will also be used as part of a summer enrichment program for high school students interested in science and engineering. Furthermore, the students working on this research project will obtain valuable training and skills in coupled aerodynamics, structures and electronics, which is critical for the advancement of energy technologies such as windmills and water turbines. The educational component is primarily focused on minority students. The research will benefit from the presence of many on-campus programs already in operation to enhance the participation of members of groups underrepresented in science and engineering, including the CUNY Pipeline Program for undergraduates interested in pursuing a Ph.D. degree. It is proposed to increase the participation of minority students at the undergraduate and high school levels through inquiry-based learning projects related to the proposed research. Dissemination of the results will be attempted using a web-based approach.

拟议的工作将首次探索收集风能设备的独特配置的性能，并使用最佳定位在流场内的压电材料。流动流体中的可用功率与其速度的立方成比例，在湍流的情况下，其与特征长度尺度的立方和特征应变率/频率尺度的立方成比例。这一特点创造了一个独特的机会，通过使用压电发电机产生大量的能量，这是交流耦合设备，将流体动能转换为电能。这种能量可以用于连续地为非常小的电子设备供电，或者可以被整流和存储以供间歇性使用。这需要对空气运动、振动结构的动力学和压电材料的电场之间的三向耦合相互作用有基本的理解。流场的详细映射将提供关于能量收集处于最大或最佳的流场的信息。这项提案中出现的工作将为设计可用于为小型电子设备供电的发电机提供基础。虽然预期的能量收集是小的，但在多点处的连续收集可能更有效率。在拟议的研究结束时，当与将现有成果扩大到现实生活规模有关的问题得到更好的理解时，就有可能实施这样一项战略。目前的研究计划和新颖的实验装置已经吸引了一些本科生和研究生以及公众的兴趣。该实验装置也将被用作对科学和工程感兴趣的高中生的夏季充实计划的一部分。此外，从事该研究项目的学生将获得耦合空气动力学，结构和电子学方面的宝贵培训和技能，这对风车和水轮机等能源技术的进步至关重要。教育部分主要侧重于少数民族学生。这项研究将受益于许多已经在运作的校园计划的存在，以提高在科学和工程中代表性不足的群体的成员的参与，包括纽约市立大学管道计划有兴趣攻读博士学位的本科生。℃下建议通过与拟议研究有关的探究式学习项目，增加少数民族学生在本科和高中一级的参与。将尝试使用基于网络的方法传播结果。