Collaborative Research: Lee Waves and Sheared Mean Flow: Interactions and Impacts of Topography

合作研究:李波和剪切平均流:地形的相互作用和影响

基本信息

  • 批准号:
    2148403
  • 负责人:
  • 金额:
    $ 54.55万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2022
  • 资助国家:
    美国
  • 起止时间:
    2022-03-15 至 2023-02-28
  • 项目状态:
    已结题

项目摘要

Lee waves are an example of internal gravity waves forced by stably stratified flow over bathymetry. Oceanic internal lee waves have horizontal wavelengths between O(1–10) km that bridge mesoscale currents and smallscale turbulence and play a central role in the ocean’s energy cascade. Their generation exerts wave drag on balanced flow and extracts mesoscale energy, and their propagation transports this energy through wave-fluxes. When they break, they convert energy downscale to turbulent dissipation and mixing, maintaining ocean’s stratification and in turn contributing to the largescale circulation. This project will examine why observed dissipation in the deep ocean downstream from flow-topography interactions is smaller than predicted by the common assumption of equating lee-wave generation with dissipation. This research will determine the role of lee waves in dissipating versus redistributing energy for better parameterizations of wave drag and mixing for oceanic general circulation models. This project will support an early-career lead PI, a graduate and two undergraduate students to be trained on wave dynamics and ocean modeling. Regional numerical modeling with Process Study Ocean Model (PSOM) will simulate the generation, propagation, interaction and dissipation of lee waves in mean shear. PSOM is a non-hydrostatic ocean model that has been widely used to study submesoscale processes. The PIs will extend prior idealized simulations to explore a range of topographic variations to examine mechanisms that may suppress turbulence in the lee of flow-topography interactions. These mechanisms are: (i) nonlinear generation due to topographic blocking and splitting, (ii) reabsorption of lee-wave energy back to the sheared mean flow, (iii) remote dissipation in the form of free waves that escape the localized generating current, and (iv) downstream advection of lee-wave energy from localized generating topography. Among these mechanisms, reabsorption will occur for trapped lee waves in bottom-intensified currents, while nonlinear generation and downstream advection have a strong dependence on specific, as opposed to random, topographies. The primary analysis tool will be energy conservation budgets for different components (mean jet, lee waves, and free waves) to quantify the dissipative and non-dissipative fates of lee waves.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
背风波是水深上稳定分层流所产生的重力内波的一个例子。海洋内部背风波的水平波长在O(1-10)km之间,连接中尺度海流和小尺度湍流,并在海洋的能量级联中发挥核心作用。它们的产生对平衡流施加波阻,并提取中尺度能量,它们的传播通过波通量传输这种能量。当它们破裂时,它们将能量向下转换为湍流耗散和混合,维持海洋的分层,进而促进大尺度环流。这个项目将研究为什么在深海下游从流动地形相互作用观察到的耗散小于由背风波产生与耗散相等的共同假设所预测的。这项研究将确定背风波的作用,消散与重新分配能量更好的参数化的波阻力和海洋大气环流模式的混合。该项目将支持一名职业生涯早期的首席PI,一名研究生和两名本科生接受波浪动力学和海洋建模方面的培训。利用过程研究海洋模式(PSOM)进行区域数值模拟,可以模拟在平均切变作用下,背风波的产生、传播、相互作用和消散过程。PSOM是一个非静力海洋模式,已被广泛用于研究亚中尺度过程。PI将扩展先前的理想化模拟,以探索一系列地形变化,以检查可能抑制气流-地形相互作用背风面湍流的机制。这些机制是:(i)由于地形阻塞和分裂的非线性发电,(ii)背风波能量重新吸收回剪切平均流,(iii)远程耗散的形式,自由波逃脱本地生成电流,和(iv)下游平流的背风波能量从本地生成地形。在这些机制中,重吸收将发生在底部加强电流的被困背风波,而非线性发电和下游平流有很强的依赖性,而不是随机的,地形。主要的分析工具将是不同组件(平均射流、背风波和自由波)的节能预算,以量化背风波的耗散和非耗散命运。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Reabsorption of Lee-Wave Energy in Bottom-Intensified Currents
底部强化电流中背风波能量的重吸收
  • DOI:
    10.1175/jpo-d-22-0058.1
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    3.5
  • 作者:
    Wu, Yue;Kunze, Eric;Tandon, Amit;Mahadevan, Amala
  • 通讯作者:
    Mahadevan, Amala
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Yue Wu其他文献

Synthesis of hypercross-linked hybrid polyanilines from hollow spherical polyaniline and octavinylsilsesquioxane and its dye adsorption performance
空心球形聚苯胺与八乙烯基倍半硅氧烷合成超交联杂化聚苯胺及其染料吸附性能
  • DOI:
    10.1016/j.mtcomm.2023.105488
  • 发表时间:
    2023-03
  • 期刊:
  • 影响因子:
    3.8
  • 作者:
    Qinghu Meng;Lu Yu;Xue Yang;Rui Gao;Hejia Chang;Yue Wu;Zhizhou Yang;Anhou Xu;Sheng Gao;Fang Liu
  • 通讯作者:
    Fang Liu
Blockchain Based Transaction Management System for IC Industry
基于区块链的集成电路行业交易管理系统
Flame characteristics of under-expanded, cryogenic hydrogen jet fire
欠膨胀低温氢喷射火的火焰特性
  • DOI:
    10.1016/j.combustflame.2022.112294
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    4.4
  • 作者:
    Xing Yu;Yue Wu;Yanqiu Zhao;Changjian Wang
  • 通讯作者:
    Changjian Wang
Activation of intestinal hypoxia-inducible factor 2 during obesity contributes to hepatic steatosis
肥胖期间肠道缺氧诱导因子2的激活导致肝脂肪变性
  • DOI:
  • 发表时间:
    2017
  • 期刊:
  • 影响因子:
    82.9
  • 作者:
    Cen Xie;Tomoki Yagai;Yuhong Luo;Xianyi Liang;Tao Chen;Qiong Wang;Dongxue Sun;Jie Zhao;Sadeesh K Ramakrishnan;Lulu Sun;Chunmei Jiang;Xiang Xue;Yuan Tian;Kristopher W Krausz;Andrew D Patterson;Yatrik M Shah;Yue Wu;Changtao Jiang;Frank J Gonzalez
  • 通讯作者:
    Frank J Gonzalez
Remote sensing image registration based on local structural information and global constraint
基于局部结构信息和全局约束的遥感图像配准
  • DOI:
    10.1117/1.jrs.13.016518
  • 发表时间:
    2019-02
  • 期刊:
  • 影响因子:
    1.7
  • 作者:
    Yue Wu;Wenping Ma;Qingxiu Su;Shaodi Liu;Yuhuan Ge
  • 通讯作者:
    Yuhuan Ge

Yue Wu的其他文献

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{{ truncateString('Yue Wu', 18)}}的其他基金

Collaborative Research: Lee Waves and Sheared Mean Flow: Interactions and Impacts of Topography
合作研究:李波和剪切平均流:地形的相互作用和影响
  • 批准号:
    2306124
  • 财政年份:
    2022
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Thermoelectric transport and carrier dynamics in three-dimensional chalcogenide nanowire networks
合作研究:三维硫族化物纳米线网络中的热电输运和载流子动力学
  • 批准号:
    1905037
  • 财政年份:
    2019
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
Heterogeneous Integration of Complex Metal Oxides in Molecular Scale Nanowires for Advanced Electronics
用于先进电子学的分子级纳米线中复杂金属氧化物的异质集成
  • 批准号:
    1206425
  • 财政年份:
    2012
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
SBIR Phase I: New Fullerene-based Electron Acceptor Materials for High Efficiency Polymer Solar Cells
SBIR 第一阶段:用于高效聚合物太阳能电池的新型富勒烯电子受体材料
  • 批准号:
    1046857
  • 财政年份:
    2011
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
STTR Phase I: New polymers for 10% efficiency organic photovoltaic cells
STTR%20Phase%20I:%20%20New%20polymers%20for%2010%%20efficiency%20organic%20photovoltaic%20cells
  • 批准号:
    1009332
  • 财政年份:
    2010
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
Nanotubular Materials and Novel Phenomena Associated with Adsorbed Molecules
纳米管材料和与吸附分子相关的新现象
  • 批准号:
    0906547
  • 财政年份:
    2009
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
Nanotubular Materials: Intrinsic Properties, Guest Molecules, and Functionalization
纳米管材料:固有特性、客体分子和功能化
  • 批准号:
    0513915
  • 财政年份:
    2005
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Continuing Grant
U.S.-Korea Cooperative Research: Inorganic Nanostructure/Dye Molecules Hybrid Systems Studied by Nuclear Magnetic Resonance
美韩合作研究:通过核磁共振研究无机纳米结构/染料分子混合系统
  • 批准号:
    0202894
  • 财政年份:
    2002
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
Single-Walled Carbon Nanotubes Studied by Nuclear Magnetic Resonance
通过核磁共振研究单壁碳纳米管
  • 批准号:
    0139452
  • 财政年份:
    2002
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
Acquisition of a Micro-Thermal Analysis Microscope for Studying Novel Materials and Student Training
购买微型热分析显微镜用于研究新材料和学生培训
  • 批准号:
    0114208
  • 财政年份:
    2001
  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant

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相似海外基金

Collaborative Research: AGS-FIRP Track 2: Lake-Effect Electrification (LEE) and the Impacts of Wind Turbines on Electrification East of Lake Ontario
合作研究:AGS-FIRP 第 2 轨道:湖效应电气化 (LEE) 以及风力涡轮机对安大略湖以东电气化的影响
  • 批准号:
    2212184
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    2022
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    Continuing Grant
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  • 批准号:
    2212196
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    2022
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Collaborative Research: AGS-FIRP Track 2: Lake-Effect Electrification (LEE) and the Impacts of Wind Turbines on Electrification East of Lake Ontario
合作研究:AGS-FIRP 第 2 轨道:湖效应电气化 (LEE) 以及风力涡轮机对安大略湖以东电气化的影响
  • 批准号:
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Collaborative Research: Lee Waves and Sheared Mean Flow: Interactions and Impacts of Topography
合作研究:李波和剪切平均流:地形的相互作用和影响
  • 批准号:
    2148404
  • 财政年份:
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  • 资助金额:
    $ 54.55万
  • 项目类别:
    Standard Grant
Collaborative Research: Lee Waves and Sheared Mean Flow: Interactions and Impacts of Topography
合作研究:李波和剪切平均流:地形的相互作用和影响
  • 批准号:
    2148405
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    $ 54.55万
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合作研究:李波和剪切平均流:地形的相互作用和影响
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