Wave Turbulence and Mixing

波湍流和混合

基本信息

  • 批准号:
    0306444
  • 负责人:
  • 金额:
    $ 18万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2003
  • 资助国家:
    美国
  • 起止时间:
    2003-07-01 至 2007-06-30
  • 项目状态:
    已结题

项目摘要

This collaborative effort addresses two closure problems arisingin fluid systems: the description of turbulent energy transferthrough a large number of wave modes, and the determination of theamount of mixing at internal breaking waves in a stratifiedenvironment. The methodology proposed includes the asymptoticreduction of complex partial differential equations to simplersystems, the numerical simulation of dynamic equations, thecritical analysis of physical principles, and the comparison oftheory and computations with physical laboratory experiments. Weanticipate that the work will yield both physical insights andinteresting new mathematics.Turbulent energy transfer, dissipation and mixing are keyprocesses in fluid dynamical problems ranging from the windgeneration of water waves to climate dynamics. In the ocean, forexample, wind driven ocean waves leads to ocean mixing, ultimatelydetermining the sea--surface temperature, which, in turn, affectsatmospheric winds, temperature and humidity. Turbulent wave actionis responsible for the transfer of energy between the very largescales of storms and the small scales of wind ripples at whichdissipation takes place. In an atmospheric example, mixing byupward propagating breaking waves plays a significant role in thedynamical coupling between the lower and the upper layers of theatmosphere. The research proposed here will contribute to theunderstanding of fundamental physical mechanisms behind theseimportant phenomena, and hence improve our capability to predictand quantify climate changes. The proposal will also have a strongeducational impact, through the training of graduate students, thedevelopment of a research seminar for undergraduate students, theteaching of challenging undergraduate classes, and by havingundergraduate students participate in summer projects focused onthe research.
这种合作的努力解决了两个封闭的问题,在流体系统中:湍流能量传递的描述通过大量的波模式,并在分层环境中的内部破碎波的混合量的测定。所提出的方法包括将复杂的偏微分方程渐近化为较简单的系统,动力学方程的数值模拟,物理原理的临界分析,以及理论和计算与物理实验室实验的比较。我们预计这项工作将产生物理见解和有趣的新数学。湍流能量的传递,耗散和混合是流体动力学问题的关键过程,从水波的风力发电到气候动力学。例如,在海洋中,风驱动的海浪导致海洋混合,最终决定了海洋表面温度,而海洋表面温度又反过来影响大气风、温度和湿度。湍流波作用是大尺度风暴和小尺度风波纹之间能量传递的原因,而小尺度风波纹的能量则在其中消散。在大气例子中,向上传播的破碎波的混合在大气低层和高层之间的动力耦合中起着重要作用。本文提出的研究将有助于理解这些重要现象背后的基本物理机制,从而提高我们预测和量化气候变化的能力。该提案还将产生强大的教育影响,通过培养研究生,为本科生举办研究研讨会,教授具有挑战性的本科课程,并让本科生参加以研究为重点的暑期项目。

项目成果

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Paul Milewski其他文献

Introduction of the Special Issue Dedicated to Professor Jean-Marc Vanden-Broeck on the Occasion of his 70th Birthday
介绍 Jean-Marc Vanden-Broeck 教授 70 岁生日之际特刊
  • DOI:
  • 发表时间:
    2024
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Paul Milewski;Demetrios Papageorgiou;E. Părău;O. Trichtchenko;Zhan Wang
  • 通讯作者:
    Zhan Wang
A new first-principles model to predict mild and deep surge for a centrifugal compressor
  • DOI:
    10.1016/j.energy.2021.123050
  • 发表时间:
    2022-04-01
  • 期刊:
  • 影响因子:
  • 作者:
    Katherine Powers;Ian Kennedy;Jamie Archer;Paul Eynon;John Horsley;Chris Brace;Colin Copeland;Paul Milewski
  • 通讯作者:
    Paul Milewski

Paul Milewski的其他文献

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{{ truncateString('Paul Milewski', 18)}}的其他基金

Maths Research Associates 2021 Bath
数学研究助理 2021 巴斯
  • 批准号:
    EP/W522491/1
  • 财政年份:
    2021
  • 资助金额:
    $ 18万
  • 项目类别:
    Research Grant
Modelling, computation and analysis of droplets guided by Faraday waves: a complex system with macroscopic quantum analogies.
法拉第波引导的液滴的建模、计算和分析:具有宏观量子类比的复杂系统。
  • 批准号:
    EP/N018176/1
  • 财政年份:
    2016
  • 资助金额:
    $ 18万
  • 项目类别:
    Research Grant
Nonlinear hydroelastic waves with applications to ice sheets
非线性水弹性波在冰盖上的应用
  • 批准号:
    EP/J019321/1
  • 财政年份:
    2012
  • 资助金额:
    $ 18万
  • 项目类别:
    Research Grant
Collaborative Research: Conservation Laws, Simple Waves and Mixing in Stratified Fluids
合作研究:守恒定律、简单波和分层流体中的混合
  • 批准号:
    0908077
  • 财政年份:
    2009
  • 资助金额:
    $ 18万
  • 项目类别:
    Standard Grant
Collaborative Research: Stability, Wave Breaking, and Mixing in Stratified Flows
合作研究:层流中的稳定性、波浪破碎和混合
  • 批准号:
    0604635
  • 财政年份:
    2006
  • 资助金额:
    $ 18万
  • 项目类别:
    Continuing Grant
EMSW21-VIGRE at the University of Wisconsin-Madison
威斯康星大学麦迪逊分校的 EMSW21-VIGRE
  • 批准号:
    0354112
  • 财政年份:
    2004
  • 资助金额:
    $ 18万
  • 项目类别:
    Continuing Grant
Nonlinear Wave Problems in Fluid Flows
流体流动中的非线性波问题
  • 批准号:
    0071939
  • 财政年份:
    2000
  • 资助金额:
    $ 18万
  • 项目类别:
    Standard Grant
Numerical and Analytical Studies of Wave Phenomena in Fluid Mechanics
流体力学中波动现象的数值与分析研究
  • 批准号:
    9704606
  • 财政年份:
    1997
  • 资助金额:
    $ 18万
  • 项目类别:
    Standard Grant

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对流云大尺度混合高雷诺数湍流中液态水含量波动研究
  • 批准号:
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  • 批准号:
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通过阐明两相湍流的普遍统计规律改进流体设备中的混合促进功能
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职业:等离子体种类、混合和电离分数对漂移波湍流和传输的影响
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合作研究:通过开尔文-亥姆霍兹不稳定管和结动力学增强湍流和混合的新途径
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