EAGER: Collaborative Research: Cloaking in stratified fluids

EAGER：合作研究：分层流体中的隐形

• 批准号: 1445672
• 负责人: Arezoo Ardekani
• 金额: $ 4.99万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-07-01 至 2016-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1445672&HistoricalAwards=false
• 关键词: EAGER; Collaborative; Research; Cloaking; stratified

PI: Alam, M.-Reza/Ardekani, ArezooProposal Number: 1414579/1414581Institution: University of California-BerkeleyTitle: EAGER: Collaborative Research: Cloaking in stratified fluidsThe objective of the proposed research is to explore the possibility of developing and deploying the equivalent of an "invisibility cloak" to render floating wind energy harvesting turbines invisible to ocean surface waves. Invisibility cloaks, made of metamaterial, have identified as one of the top ten important discoveries in solid state physics, optics, and acoustics in the first decade of 21st century, but this is now being discussed in the context of fluid mechanics and water waves.Intellectual MeritAn invisibility cloak for an object at the water surface can be accomplished when the surface waves detour the object as if the object does not exist, i.e., when there is no diffraction. An important consequence of such a cloaking is that floating structures and objects in a cloaked region will be protected from powerful incoming surface waves. The proposed research will take first strides into this area in a fluid mechanics context by using a combined theoretical, computational, and experimental approach. The research is focused on the effect of buoyancy jump (typical of oceans and lakes), viscosity, inertia, diffusion, and non-uniformities of seabed topography on cloaking in both sharp and continuous stratified fluids.Broader ImpactsThis research program can lead to designing new strategies to protect moving and stationary ocean objects (ships, submarines, offshore platforms such as wind turbines) from disruptive effects of oceanic waves. In this work, fundamental fluid mechanics will be used to augment this area of aquatic science and oceanography. The proposed research is potentially transformative in that this area of fluid mechanics has to date gone mostly unexplored. The grant will also provide partial support for training two graduate students. The participation of women and members of underrepresented groups will be facilitated through the Women's Engineering Program at University of California Berkeley and Notre Dame. The PIs will ensure the participation of undergraduates through the Undergraduate Research Opportunity Program at both Berkeley and Notre Dame.

PI：Alam，M.-Reza/Ardekani，Arezoo 提案编号：1414579/1414581 机构：加州大学伯克利分校 标题：EAGER：协作研究：分层流体中的隐形 拟议研究的目的是探索开发和部署等效物的可能性一种“隐形斗篷”，可以使漂浮的风能收集涡轮机对海面波浪不可见。由超材料制成的隐形斗篷被认为是21世纪头十年固态物理、光学和声学领域十大重要发现之一，但现在人们正在以流体力学和水波为背景来讨论这一点。智力优点 当表面波绕过物体，就好像该物体不存在一样，即没有衍射时，就可以在水面上实现物体的隐形斗篷。这种隐形的一个重要后果是，隐形区域中的漂浮结构和物体将受到保护，免受强大的入射表面波的影响。拟议的研究将通过结合理论、计算和实验方法，在流体力学背景下向这一领域迈出第一步。 该研究的重点是浮力跳跃（典型的海洋和湖泊）、粘度、惯性、扩散和海底地形的不均匀性对锐利和连续分层流体中隐身效果的影响。更广泛的影响该研究项目可以导致设计新的保护移动和静止海洋物体（船舶、潜艇、风力涡轮机等海上平台）免受海浪破坏性影响的策略。在这项工作中，基础流体力学将用于增强水生科学和海洋学的这一领域。拟议的研究具有潜在的变革性，因为迄今为止流体力学的这一领域基本上尚未被探索。这笔赠款还将为培养两名研究生提供部分支持。加州大学伯克利分校和圣母大学的女性工程项目将促进女性和代表性不足群体成员的参与。 PI 将确保本科生参与伯克利分校和圣母大学的本科生研究机会计划。