Kinematics and Hydrodynamics of Aquatic Jet Bio-Propulsion

CBET -0854542 Mohseni，Kamran 该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。该研究计划解决了喷气和涡流推进的基础科学由Cephalopod（鱿鱼，墨鱼等）和美杜莎（水母）相比，通过身体和鳍的波动，像大多数鱼更好地研究水生运动。我们计划一个混合实验，计算和理论的方法来理解和推进水动力学和仿生学的水上喷气推进。该研究计划有三个主要方向：运动学研究、计算流体动力学（CFD）和实验与仿生学。为研究喷射流和涡流对鱿鱼的推力产生机理，将建立鱿鱼饲养和储存设施。高速摄影和流动可视化将提供鱿鱼地幔腔和虹吸管在几个流态，包括逃逸和机动的运动学数据。这些新的同步和详细的测量需要直接数值模拟鱿鱼运动的基础上测量的运动学数据。此外，还可以直接计算出游泳的速度、推力、所需功率和效率等游泳性能。 在运动学和计算流体动力学研究中获得的知识将转化为有效的水下推进生物激励执行器的工程设计和测试。将对致动器进行建模和实验表征。设计可靠的水下机器人传感器网络在国家和国土安全以及沿海地区保护中发挥着重要作用。高效的自主水下航行器（AUV）需要在海洋中长期运行，以进行沿海地区的监测和保护以及与全球变暖相关的数据收集。该项目提供了一个应用重点，将有兴趣的研究人员和学生在海洋工程，车辆系统和生物学家工作。本科研究助理将通过补充REU支持寻求。PI打算开发生物推进课程，而现有的学科课程将丰富这项工作，扩大学生的多学科接触。此外，计划亦会扩大由公众教育署发起的“生物推进夏令营”，让本地中学生参加为期一周的教育活动及“国际交换生计划”。

CBET -0854542 Mohseni, Kamran This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This research program addresses the fundamental science of jet and vortex propulsion by Cephalopods (squid, cuttlefish, etc) and Medusa (Jellyfish) in contrast to more well-investigated aquatic locomotion through body and fin undulations like most fish. We plan a hybrid experimental, computational, and theoretical approach to understand and advance hydrodynamics and biomimicry of aquatic jet propulsion. The research plan has three main thrusts Kinematic Investigation, Computational Fluid Dynamics (CFD) and Experimentation and Biomimicry. A squid care and storage facility will be built for investigation on aquatic thrust-generation mechanism by jet and vortex flow. High-speed photography and flow visualization will provide kinematic data for the squid mantle cavity and siphon during several flow regimes including escape and maneuver. These new simultaneous and detailed measurements are needed for direct numerical simulation of squid locomotion based on the measured kinematic data. In addition, the swimming performances such as swimming velocity, thrust, power requirement and efficiency can be computed directly. The knowledge gained in the kinematic and CFD studies will be translated into engineering design and testing of bio-inspired actuators for effective underwater propulsion. The actuators will be modeled and experimentally characterized. Design of reliable underwater vehicles for sensor networking is playing a major role in National and Homeland Security and costal area protection. Efficient Autonomous Underwater Vehicles (AUVs) are needed for long-term operation in oceans for coastal area monitoring and protection and data collection related to global warming. This project provides an application focus that will be of interest to researchers and students working in ocean engineering, vehicle systems, and biologists. Undergraduate research assistants will be sought via supplementary REU support. The PI intends to develop a course on bio-propulsion while existing disciplinary courses will be enriched with this work, expanding student multidisciplinary exposure. A summer Bio-propulsion Summer Camp for local secondary school students to participate in a week-long educational activity and an International Exchange Student Program, initiated by the PI, will be expanded.