Flow Physics and Vortex-Induced Acoustics in Bio-Inspired Collective Locomotion

仿生集体运动中的流动物理学和涡激声学

基本信息

  • 批准号:
    RGPIN-2022-03410
  • 负责人:
  • 金额:
    $ 0.64万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2022
  • 资助国家:
    加拿大
  • 起止时间:
    2022-01-01 至 2023-12-31
  • 项目状态:
    已结题

项目摘要

Schooling phenomenon is ubiquitous in nature. Its prominent examples include swarms of fish, flight of birds in specific formations, and collective locomotion of small-scale biological objects, such as sperms. Such configurations help the members significantly reduce the energetic cost of propulsion as well as enhance their thrust and efficiency. In these natural dynamical systems, highly unsteady three-dimensional vortices emerge due to undulatory kinematics of each member of the school. It becomes more complex due to the interaction of coherent structures with the bodies moving in their vicinity. Furthermore, these activities generate pressure disturbances in the surrounding fluid, causing the spread of acoustic signals in water. This preamble provides the foundation of my plan to build and grow my research career in the fields of computational fluid-structure-acoustic interaction (FSAI) and bio-inspired robotics, which supports my long-term research objective of developing next-generation high-speed, efficient, and stealth nature-inspired robots. The presently proposed research focusses on the development of a novel computational solver through the sharp-interface immersed-boundary method to handle intense fluid-structure interactions, involving multiple oscillating bodies. Moreover, this solver facilitates the extraction and analysis of coherent flow structures to identify their roles for producing unsteady forces. The methodology will substantially contribute towards developing accurate theoretical and computational models of different natural swimmers and their schooling configurations. It is also particularly relevant to understand the mechanisms adopted by fish to communicate through pressure signals in surrounding flows, which allows them to feel the presence of other moving objects and acts as a tool for navigation. For this purpose, I will develop modules to compute acoustic signatures in the numerical solver to understand how vortex-body interactions impact the emission of pressure disturbances in flow fields.  This work is important to establish principles for designing autonomous fish-like robots capable of swimming silently without causing disruptions in natural habitats. Besides bio-inspired robots and energy harvesters, applications of the fundamental knowledge gained through this research and novel computational tools developed in this program are cross-disciplinary. These include the examination of various FSAI-related biological mechanisms, dynamics of different bodies in environmental flows, and the acoustic emissions in the environment from engineered systems. Along with training HQPs in multidisciplinary areas, this project will also address the development of educational modules on fluid dynamics for students in high school physics and introduce various outreach activities for young women and indigenous people to inspire them about STEM.
学校化现象在自然界中普遍存在。其突出的例子包括鱼群,鸟类在特定编队中的飞行,以及小规模生物物体(如精子)的集体运动。这样的配置有助于成员显着降低推进的能量成本,以及提高其推力和效率。在这些自然的动力系统中,高度不稳定的三维涡流出现由于波动运动学的学校的每个成员。由于相干结构与在其附近移动的物体的相互作用,它变得更加复杂。此外,这些活动在周围的流体中产生压力扰动,导致声信号在水中传播。这篇序言为我在计算流体-结构-声相互作用(FSAI)和仿生机器人领域建立和发展我的研究生涯提供了基础,这支持了我开发下一代高速,高效和隐身的自然启发机器人的长期研究目标。 目前提出的研究重点是开发一种新的计算求解器,通过尖锐的界面浸没边界法处理激烈的流体-结构相互作用,涉及多个振荡机构。此外,该求解器便于提取和分析相干流结构,以确定其产生非定常力的作用。该方法将大大有助于发展准确的理论和计算模型,不同的自然游泳运动员和他们的学校配置。这也是特别相关的,以了解鱼类通过压力信号在周围的流动,这使他们能够感觉到其他移动物体的存在,并作为导航工具进行通信的机制。为此,我将开发模块来计算数值求解器中的声学特征,以了解涡体相互作用如何影响流场中压力扰动的发射。这项工作对于建立设计能够安静游泳的自主鱼状机器人的原则非常重要,而不会造成自然栖息地的破坏。 除了生物启发的机器人和能量采集器之外,通过这项研究获得的基础知识的应用和在该计划中开发的新型计算工具是跨学科的。这些包括检查各种FSAI相关的生物机制,环境流中不同物体的动力学,以及工程系统在环境中的声发射。沿着多学科领域的HQP培训,该项目还将为高中物理学生开发流体动力学教育模块,并为青年妇女和土著人民开展各种外联活动,以激励他们了解STEM。

项目成果

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Khalid, MuhammadSaifUllah其他文献

Khalid, MuhammadSaifUllah的其他文献

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{{ truncateString('Khalid, MuhammadSaifUllah', 18)}}的其他基金

Flow Physics and Vortex-Induced Acoustics in Bio-Inspired Collective Locomotion
仿生集体运动中的流动物理学和涡激声学
  • 批准号:
    DGECR-2022-00019
  • 财政年份:
    2022
  • 资助金额:
    $ 0.64万
  • 项目类别:
    Discovery Launch Supplement
Flow Physics and Vortex-Induced Acoustics in Bio-Inspired Collective Locomotion
仿生集体运动中的流动物理学和涡激声学
  • 批准号:
    RGPIN-2022-03410
  • 财政年份:
    2022
  • 资助金额:
    $ 0.64万
  • 项目类别:
    Discovery Grants Program - Individual

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