High Reynolds Number Turbulence Research in Cryogenic Helium

低温氦中的高雷诺数湍流研究

基本信息

  • 批准号:
    1801780
  • 负责人:
  • 金额:
    $ 37.5万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2018
  • 资助国家:
    美国
  • 起止时间:
    2018-06-01 至 2021-12-31
  • 项目状态:
    已结题

项目摘要

Many flows in nature, including those generated by aircraft, ships, and the atmosphere, have extremely high Reynolds numbers. The Reynolds number is the ratio of flow's inertial forces relative to viscous forces, and it determines important flow properties such as turbulence. Understanding flows with extremely high Reynolds numbers will increase efficiency in practical vehicle applications and improve understanding of the climate. However, high Reynolds-number flow in conventional fluids like air and water occurs on a relatively large scale thus is difficult to study on the laboratory scale. Fortunately, high Reynolds number flows can be achieved using lower-density fluids such as cryogenic helium-4 in, for example, a small-scale laboratory pipe flow experiment. But to unlock the full potential of cryogenic helium-4, suitable flow measurement tools to quantify the turbulence are also required. The proposed research will therefore develop advanced molecular tagging velocity measurement techniques and apply the technique to high Reynolds number cryogenic helium pipe flow. In terms of educational opportunities, the joint College of Engineering operated by Florida State University and Florida A&M University will be leveraged to recruit under-represented minorities to participate in the project. The PI and the co-PI's groups will also contribute educational demonstrations for public open-house events at the National High Magnetic Field Laboratory and at the Florida Center for Advanced Aero-Propulsion.The scientific goal of this project is to develop a state-of-the-art molecular tagging velocimetry technique for cryogenic helium and to demonstrate its usefulness by applying it in the study of high Reynolds number cryogenic helium pipe flow. Sophisticated patterns of the molecular tracer lines will be created by splitting and focusing a femtosecond laser beam in liquid helium. Advanced pattern-tracking algorithms will be incorporated, and the spatial and temporal resolutions of the tracer imaging process will be optimized. These developments will unlock the full potential of cryogenic helium in turbulence research and model testing. The planned study on high Reynolds number pipe flows in helium will allow an independent examination of the near-wall velocity field and the associated von K?rm?n coefficient, which may help resolve existing controversies regarding the universality of this coefficient. Also, new knowledge about the near-wall spatial velocity correlations will be produced by tracking the tracer lines created perpendicular to the wall. Furthermore, by measuring the pressure drop along the pipe, reliable friction factor data for high Reynolds number flows will be obtained, which will benefit the design of various engineering systems that exhibit high Reynolds numbers.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.
自然界中的许多流动,包括由飞机、船只和大气产生的流动,都具有极高的雷诺数。雷诺数是流动的惯性力相对于粘性力的比率,它决定了重要的流动特性,如湍流。了解具有极高雷诺数的流动将提高实际车辆应用的效率,并改善对气候的了解。然而,高雷诺数流动在空气和水等常规流体中发生的规模较大,因此很难在实验室规模上进行研究。幸运的是,在例如小规模的实验室管道流动实验中,可以使用较低密度的流体,如低温氦-4来实现高雷诺数流动。但为了充分发挥低温氦-4的潜力,还需要合适的流量测量工具来量化湍流。因此,这项研究将发展先进的分子标记速度测量技术,并将该技术应用于高雷诺数低温氦管流动。在教育机会方面,将利用佛罗里达州立大学和佛罗里达农工大学联合运营的工程学院,招收代表人数不足的少数族裔参与该项目。PI和共同PI的小组还将为国家强磁场实验室和佛罗里达先进航空推进中心的公开开放活动提供教育演示。该项目的科学目标是开发一种最先进的低温氦分子标记测速技术,并通过将其应用于高雷诺数低温氦管道流动的研究来证明其有效性。分子示踪线的复杂图案将通过在液氦中对飞秒激光进行分裂和聚焦来创建。将采用先进的模式跟踪算法,并优化示踪剂成像过程的空间和时间分辨率。这些进展将充分释放低温氦在湍流研究和模型试验中的潜力。计划中的高雷诺数氦管流研究将允许对近壁速度场和相关的von K?rm?N系数进行独立的检验,这可能有助于解决关于该系数普适性的现有争议。此外,通过跟踪垂直于墙创建的示踪线,将产生关于近壁空间速度相关性的新知识。此外,通过测量管道沿线的压力降,将获得可靠的高雷诺数流动的摩阻系数数据,这将有助于各种显示出高雷诺数的工程系统的设计。该奖项反映了NSF的法定使命,并通过使用基金会的智力优势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(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
A cryogenic-helium pipe flow facility with unique double-line molecular tagging velocimetry capability
具有独特双线分子标记测速能力的低温氦管流设施
  • DOI:
    10.1063/5.0008117
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    1.6
  • 作者:
    Sanavandi, Hamid;Bao, Shiran;Zhang, Yang;Keijzer, Ruben;Guo, Wei;Cattafesta, III, Louis N.
  • 通讯作者:
    Cattafesta, III, Louis N.
Molecular Tagging Velocimetry in Superfluid Helium-4: Progress, Issues, and Future Development
超流 Helium-4 中的分子标记测速:进展、问题和未来发展
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Wei Guo其他文献

Influence of geosynthetic reinforcement on the stability of an embankments with rigid columns embedded in an inclined underlying stratum
土工合成材料加筋对倾斜下垫层刚性柱路堤稳定性的影响
  • DOI:
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    5.2
  • 作者:
    Gang Zheng;Xiaoxuan Yu;Haizuo Zhou;Xinyu Yang;Wei Guo;Pengbo Yang
  • 通讯作者:
    Pengbo Yang
Effect of magnesia on the compressive strength of pellets
氧化镁对球团矿抗压强度的影响
Intensified sulfamethoxazole removal in an electrolysis-integrated tidal flow constructed wetland system
电解集成潮汐流人工湿地系统强化磺胺甲恶唑去除
  • DOI:
    10.1016/j.cej.2020.124545
  • 发表时间:
    2020-06
  • 期刊:
  • 影响因子:
    15.1
  • 作者:
    Xiaohui Liu;Yongqiang Wang;Shaoyong Lu;Ying Liu;Bin Zhao;Beidou Xi;Xiaochun Guo;Wei Guo;Jian Zhang
  • 通讯作者:
    Jian Zhang
Self-assembled chiral phosphorus nanotubes from phosphorene: a molecular dynamics study
由磷烯自组装手性磷纳米管:分子动力学研究
  • DOI:
    10.1039/c7ra03807k
  • 发表时间:
    2016-05
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Douxing Pan;Tzu-Chiang Wang;Chao Wang;Wei Guo;Yugui Yao
  • 通讯作者:
    Yugui Yao
Degradation difference of Ofloxacin and Levofloxacin by UV/H2O2 and UV/PS (persulfate): Efficiency, factors and mechanism
UV/H2O2 和 UV/PS(过硫酸盐)对氧氟沙星和左氧氟沙星的降解差异:效率、因素和机制
  • DOI:
    10.1016/j.cej.2019.123987
  • 发表时间:
    2020-04
  • 期刊:
  • 影响因子:
    15.1
  • 作者:
    Xiaohui Liu;Ying Liu;Shaoyong Lu;Zhi Wang;Yongqiang Wang;Guodong Zhang;Xiaochun Guo;Wei Guo;Tingting Zhang;Beidou Xi
  • 通讯作者:
    Beidou Xi

Wei Guo的其他文献

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{{ truncateString('Wei Guo', 18)}}的其他基金

Conference: Organizing 2024 International Conference on Quantum Fluids and Solids
会议:组织2024年量子流体和固体国际会议
  • 批准号:
    2318163
  • 财政年份:
    2023
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant
Stereoscopic visualization study of turbulence and vortex-tangle dynamics in He II
He II 中湍流和涡旋缠结动力学的立体可视化研究
  • 批准号:
    2100790
  • 财政年份:
    2021
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant
Adaptive High Order Low-Rank Tensor Methods for High-Dimensional Partial Differential Equations with Application to Kinetic Simulations
高维偏微分方程的自适应高阶低阶张量方法及其在动力学模拟中的应用
  • 批准号:
    2111383
  • 财政年份:
    2021
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant
Flow Visualization Study of Quantum Hydrodynamics in Superfluid Helium-4
超流 Helium-4 中量子流体动力学的流动可视化研究
  • 批准号:
    1807291
  • 财政年份:
    2018
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant
Development and Application of Efficient High-order Semi-Lagrangian Schemes
高效高阶半拉格朗日格式的开发与应用
  • 批准号:
    1830838
  • 财政年份:
    2017
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant
Workshop on Quantum Turbulence
量子湍流研讨会
  • 批准号:
    1636539
  • 财政年份:
    2016
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant
Development and Application of Efficient High-order Semi-Lagrangian Schemes
高效高阶半拉格朗日格式的开发与应用
  • 批准号:
    1620047
  • 财政年份:
    2016
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Standard Grant
Visualization study of vortex-line dynamics in a magnetically levitated helium-4 superfluid drop
磁悬浮氦 4 超流体液滴涡线动力学的可视化研究
  • 批准号:
    1507386
  • 财政年份:
    2015
  • 资助金额:
    $ 37.5万
  • 项目类别:
    Continuing Grant

相似国自然基金

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  • 批准号:
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  • 批准年份:
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Towards understanding transition mechanism and application to heat transfer enhancement of elasto-inertia turbulence at low Reynolds number based on vortex modulation
基于涡旋调制的低雷诺数弹惯性湍流传热强化的理解和应用
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高雷诺数湍流中液态水含量波动研究,用于早期探测快速发展的云
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A dynamical systems analysis of high-Reynolds-number wall turbulence
高雷诺数壁面湍流的动力系统分析
  • 批准号:
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Development and evaluation of advanced turbulence models for high Reynolds number separated flows
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Collaborative Research: Effect of Helicity on the Development of Free-Shear Turbulence at High Reynolds Number
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Visualization and diagnostics of high-Reynolds-number stratified wake turbulence
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Collaborative Research: Effect of Helicity on the Development of Free-Shear Turbulence at High Reynolds Number
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