UNS: Collaborative Research: Role of Bristled Wings for Flying and Swimming at Low Reynolds Numbers

UNS：合作研究：鬃毛翅膀在低雷诺数下飞行和游泳的作用

• 批准号: 1512071
• 负责人: Arvind Santhanakrishnan
• 金额: $ 23.62万
• 依托单位: Oklahoma State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-07-01 至 2020-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1512071&HistoricalAwards=false
• 关键词: UNS; Collaborative; Research; Role; Bristled

1512071(Santhanakrishnan) & 1511427(Miller)The focus of the proposed project is to explore the fluid dynamic principles that enable small insects to generate lift and produce thrust. When the wings of small insects clap together during the flapping motion and then fling apart, there is the expectation that flight would not be efficient, but it is. Resolving this paradox can have a significant scientific and technological impact, because we could also design machinery that takes advantage of such phenomena like small robotic vehicles that move across fluid-air interfaces.The proposal is focused on the understanding of the phenomena involved when bristled wings, like those of small insects generate lift. Although the aerodynamic principles of insect flight at the scale of fruit flies and above are reasonably well understood, the fluid dynamic mechanisms that enable very tiny insects to generate lift or thrust remain unclear. When the wings clap together at the end of the upstroke of the flapping motion and fling apart at the start of the downstroke, there are novel phenomena that take place. The fundamental investigation in this work will be focused on a particularly intriguing paradox: why is there a noted biological preference in almost all tiny insects to employ interacting bristled wings under highly viscous conditions that would require large forces to peel the wings apart? It is proposed to develop 3D poroelastic models to study locomotion using bristled appendages. Two types of insects will be examined (thrips and parasitoid wasps), which are capable of flying in air and swimming in water. The experiments in this proposal will also use robotic wing-wing interaction platforms with dynamically scaled bristled wing models informed by high-speed videos of tiny insects. Wing design and kinematics for flapping propulsion at low Re will be identified through numerical simulations of experimentally validated poroelastic wing models implemented in an immersed boundary method framework. Graduate and undergraduate student involvement in the research is proposed. Minority student participation will be pursued through the Louis Stokes Alliances for Minority Participation (LSAMP) program at both institutions. Outreach activities for high school students and teachers participating in the Oklahoma State University National Lab Day annual event are also described.

1512071（Santhanakrishnan）和1511427（Miller）拟议项目的重点是探索使小昆虫能够产生升力和推力的流体动力学原理。当小昆虫的翅膀在拍打动作时拍在一起然后分开时，人们预计飞行效率不会很高，但事实确实如此。解决这个悖论可以产生重大的科学和技术影响，因为我们还可以设计利用此类现象的机械，例如跨流体-空气界面移动的小型机器人车辆。该提案的重点是理解竖起翅膀时所涉及的现象，就像那些产生升力的小昆虫一样。尽管果蝇及以上规模的昆虫飞行的空气动力学原理已经相当清楚，但使非常小的昆虫产生升力或推力的流体动力学机制仍不清楚。当翅膀在扑动运动的上冲程结束时拍在一起并在下冲程开始时分开时，就会发生新奇的现象。这项工作的基本研究将集中在一个特别有趣的悖论上：为什么几乎所有微小昆虫都有一种明显的生物学偏好，在高粘性条件下使用相互作用的刚毛翅膀，这需要很大的力量才能将翅膀剥离？建议开发 3D 多孔弹性模型来研究使用刚毛附件的运动。将检查两种类型的昆虫（蓟马和寄生黄蜂），它们能够在空中飞行和在水中游泳。该提案中的实验还将使用机器人翼翼交互平台，该平台具有动态缩放的鬃毛翼模型，由微小昆虫的高速视频提供信息。将通过在浸入边界方法框架中实施的经过实验验证的多孔弹性机翼模型的数值模拟来确定低 Re 扑动推进的机翼设计和运动学。建议研究生和本科生参与该研究。少数族裔学生的参与将通过两所机构的路易斯斯托克斯少数族裔参与联盟（LSAMP）计划来实现。还描述了参加俄克拉荷马州立大学国家实验室日年度活动的高中生和教师的外展活动。

项目成果

Three-Dimensional Low Reynolds Number Flows near Biological Filtering and Protective Layers

生物过滤和保护层附近的三维低雷诺数流动

• DOI: 10.3390/fluids2040062
• 发表时间: 2017-12
• 期刊: Fluids
• 影响因子: 1.9
• 作者: Strickland, Christopher;Miller, Laura;Santhanakrishnan, Arvind;Hamlet, Christina;Battista, Nicholas;Pasour, Virginia
• 通讯作者: Pasour, Virginia

Flow Structure and Force Generation on Flapping Wings at Low Reynolds Numbers Relevant to the Flight of Tiny Insects

与微小昆虫飞行相关的低雷诺数扑翼的流动结构和力产生

• DOI: 10.3390/fluids3030045
• 发表时间: 2018-09
• 期刊: Fluids
• 影响因子: 1.9
• 作者: Santhanakrishnan, Arvind;Jones, Shannon;Dickson, William;Peek, Martin;Kasoju, Vishwa;Dickinson, Michael;Miller, Laura
• 通讯作者: Miller, Laura

Pausing after clap reduces power required to fling wings apart at low Reynolds number

拍手后暂停可减少在低雷诺数下将机翼分开所需的功率

• DOI: 10.1088/1748-3190/ac050a
• 发表时间: 2020-10-27
• 期刊: Bioinspiration & Biomimetics
• 影响因子: 3.4
• 作者: V. Kasoju;Arvind Santhanakrishnan
• 通讯作者: Arvind Santhanakrishnan

Flapping Flight of Tiny Insects: Role of Bristled Wings

小昆虫拍动翅膀飞行：刚毛翅膀的作用

• DOI: 10.2514/6.2018-2916
• 发表时间: 2018-01
• 期刊: (AIAA 2018-2916
• 作者: Kasoju, Vishwa T.;Ford, Mitchell P.;Santhanakrishnan, Arvind
• 通讯作者: Santhanakrishnan, Arvind

Aerodynamic effects of varying solid surface area of bristled wings performing clap and fling

不同固体表面积的鬃毛翅膀进行拍击和投掷的空气动力效果

• DOI: 10.1088/1748-3190/ab1a00
• 发表时间: 2019-05-17
• 期刊: Bioinspiration & Biomimetics
• 影响因子: 3.4
• 作者: Mitchell P Ford;V. Kasoju;Manikantam G. Gaddam;Arvind Santhanakrishnan
• 通讯作者: Arvind Santhanakrishnan