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
基本信息
- 批准号:2100790
- 负责人:
- 金额:$ 52.15万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-08-01 至 2024-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Non-Technical Abstract: When liquid helium is cooled to below about -271 degrees Celsius, it becomes a superfluid (called He II), which can do things that other fluids cannot, such as flowing through a narrow capillary without apparent friction and climbing over container walls despite the gravity. The fascinating hydrodynamics of He II has many important applications. For instance, it supports an extremely efficient heat-transport mode called thermal counterflow and therefore has been widely utilized as a coolant material in scientific instruments. When stirred, He II can also create vortex tubes which are essentially tiny tornadoes with thin hollow cores. Understanding the dynamics of a tangle of vortex tubes can benefit the study of various physical systems such as neutron stars that consist of neutron-pair superfluid. In this project, the research team aims to explore some predicted anomalous behaviors in counterflow turbulence and to visualize the vortex tubes in He II using advanced three-dimensional flow visualization techniques. This research can produce fundamental knowledge indispensable for better applications of He II. The research team consists of both postdoctoral researchers and graduate students. Through the project, the team members are expected to gain valuable knowledge in fluid dynamics, cryogenics, and laser technologies. The skills they learn through the research training are also crucial for their success in today's job market. In addition, the research team plans to conduct educational demonstrations involving cryogenic fluids in various outreach programs at the National High Magnetic Field Laboratory. The PI is also committed to serve the research community by organizing workshop and conferences to engage junior researchers. Technical Abstract:The current research work consists of: 1) a stereoscopic molecular tagging velocimetry (MTV) study of the anomalous anisotropy in He II counterflow turbulence, and 2) an exploration of the vortex tangle dynamics using a scanning particle tracking velocimetry (PTV) method. The stereoscopic MTV system, which incorporates a unique double-line optical setup, is developed as the first-of-its-kind equipment in quantum turbulence research. It offers the capability of making unambiguous measurements of the normal-fluid velocity field and its spatial correlations in the coupled two-fluid system, which breaks the ground for solving various challenging problems. The study of the anomalous anisotropy in He II counterflow turbulence is expected to produce experimental data that are critical for the development of a complete theoretical understanding of this complex doubly turbulent system. Such an understanding not only advances the knowledge of turbulence in general but also aids the cryogenic engineers in designing more efficient He II based cooling systems. The scanning PTV system to be developed enables real-time imaging of quantized vortex tangles in three-dimensional space, which offers a great opportunity for vortex research that is not possible otherwise. The planned research on exploring the vortex-reconnection scaling, vortex-velocity correlations, and vortex trajectory statistics should produce important new knowledge needed for the development of an advanced statistical model of quantum turbulence.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.
非技术摘要:当液氦被冷却到低于约-271摄氏度时,它成为一种超流体(称为He II),它可以做其他流体不能做的事情,例如在没有明显摩擦的情况下流过狭窄的毛细管,并在重力下爬过容器壁。He II迷人的流体动力学有许多重要的应用。例如,它支持一种称为热逆流的非常有效的热传输模式,因此已被广泛用作科学仪器中的冷却剂材料。当被搅动时,He II还可以产生涡流管,涡流管本质上是具有薄中空核心的微小龙卷风。了解涡旋管缠结的动力学可以有助于研究各种物理系统,如中子星,由中子对超流体组成。在这个项目中,研究小组的目标是探索逆流湍流中的一些预测异常行为,并使用先进的三维流动可视化技术可视化He II中的涡流管。这项研究可以为He II的更好应用提供不可或缺的基础知识。研究团队由博士后研究人员和研究生组成。通过该项目,团队成员有望获得流体动力学,低温学和激光技术方面的宝贵知识。他们通过研究培训学到的技能也是他们在当今就业市场取得成功的关键。此外,研究小组计划在国家高磁场实验室的各种推广计划中进行涉及低温流体的教育演示。PI还致力于通过组织研讨会和会议来吸引初级研究人员,为研究界服务。 技术摘要:目前的研究工作包括:1)一个立体分子标记测速(MTV)研究的异常各向异性在He II逆流湍流,和2)一个探索的涡旋缠结动力学使用扫描粒子跟踪测速(PTV)方法。立体MTV系统采用独特的双线光学装置,是量子湍流研究中的第一台设备。它提供了在耦合的两流体系统中对正常流体速度场及其空间相关性进行明确测量的能力,这为解决各种具有挑战性的问题奠定了基础。He II逆流湍流中的异常各向异性的研究预计将产生实验数据,这些数据对于发展这种复杂的双湍流系统的完整理论理解至关重要。这样的理解不仅推进了一般湍流的知识,而且有助于低温工程师设计更有效的He II冷却系统。待开发的扫描PTV系统能够在三维空间中对量化的涡旋缠结进行实时成像,这为涡旋研究提供了一个很好的机会。计划中的研究探索涡重联缩放,涡速度的相关性,和涡轨迹的统计应该产生重要的新知识,需要一个先进的量子湍流的统计模型的发展。这个奖项反映了NSF的法定使命,并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。
项目成果
期刊论文数量(7)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Vinen’s Latest Thoughts on the “Bump” Puzzle in Decaying He II Counterflow Turbulence
维宁对衰变 He II 逆流湍流中“碰撞”难题的最新思考
- DOI:10.1007/s10909-023-02961-7
- 发表时间:2023
- 期刊:
- 影响因子:2
- 作者:Guo, Wei;Kanai, Toshiaki
- 通讯作者:Kanai, Toshiaki
Universal Anomalous Diffusion of Quantized Vortices in Ultraquantum Turbulence
超量子湍流中量子化涡旋的普遍反常扩散
- DOI:10.1103/physrevlett.129.025301
- 发表时间:2022
- 期刊:
- 影响因子:8.6
- 作者:Yui, Satoshi;Tang, Yuan;Guo, Wei;Kobayashi, Hiromichi;Tsubota, Makoto
- 通讯作者:Tsubota, Makoto
Velocity circulation intermittency in finite-temperature turbulent superfluid helium
有限温度湍流超流氦中的速度循环间歇性
- DOI:10.1103/physrevfluids.7.104604
- 发表时间:2022
- 期刊:
- 影响因子:2.7
- 作者:Müller, Nicolás P.;Tang, Yuan;Guo, Wei;Krstulovic, Giorgio
- 通讯作者:Krstulovic, Giorgio
True Mechanism of Spontaneous Order from Turbulence in Two-Dimensional Superfluid Manifolds
二维超流体流形中湍流自发有序的真实机制
- DOI:10.1103/physrevlett.127.095301
- 发表时间:2021
- 期刊:
- 影响因子:8.6
- 作者:Kanai, Toshiaki;Guo, Wei
- 通讯作者:Guo, Wei
Single electrons on solid neon as a solid-state qubit platform
固体氖上的单电子作为固态量子位平台
- DOI:10.1038/s41586-022-04539-x
- 发表时间:2022
- 期刊:
- 影响因子:64.8
- 作者:Zhou, Xianjing;Koolstra, Gerwin;Zhang, Xufeng;Yang, Ge;Han, Xu;Dizdar, Brennan;Li, Xinhao;Divan, Ralu;Guo, Wei;Murch, Kater W.
- 通讯作者:Murch, Kater W.
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Wei Guo其他文献
Seismic response of high-speed railway bridge-track system considering unequal-height pier configurations
考虑不等高桥墩配置的高速铁路桥轨系统地震响应
- DOI:
10.1016/j.soildyn.2020.106250 - 发表时间:
2020-10 - 期刊:
- 影响因子:4
- 作者:
Yao Hu;Wei Guo - 通讯作者:
Wei Guo
Phase-generated-carrier-modulated laser interferometer for measurement of ground vibration on an absolute gravimeter
用于在绝对重力计上测量地面振动的相位生成载波调制激光干涉仪
- DOI:
10.1364/ao.59.000285 - 发表时间:
2020 - 期刊:
- 影响因子:1.9
- 作者:
Xiong Zhenyu;Wei Guo;Yu Xudong;Long Xingwu;Guo Youguang - 通讯作者:
Guo Youguang
Osteosarcoma cell intrinsic PD-L2 signals promote invasion and metastasis via the RhoA-ROCK-LIMK2 and autophagy pathways
骨肉瘤细胞内在的PD-L2信号通过RhoA-ROCK-LIMK2和自噬途径促进侵袭和转移
- DOI:
10.1093/annonc/mdy493.022 - 发表时间:
2018 - 期刊:
- 影响因子:50.5
- 作者:
T. Ren;B. Zheng;Wei Guo - 通讯作者:
Wei Guo
On the amount of counterpart assistance to be provided after natural disasters: from the perspective of indirect economic loss assessment
论自然灾害后的对口援助数额:基于间接经济损失评估的视角
- DOI:
10.1080/17477891.2016.1229655 - 发表时间:
2017-01 - 期刊:
- 影响因子:0
- 作者:
Wu Xianhua;Guo Ji;Ji Zhonghui;Xue Peipei;Ning Xueqiang;Wei Guo;Wu XH - 通讯作者:
Wu XH
The Implementation of Driver Model Based on the Attention Transfer Process
基于注意力转移过程的驾驶员模型的实现
- DOI:
10.1155/2017/3714254 - 发表时间:
2017-03 - 期刊:
- 影响因子:0
- 作者:
ShuanFeng Zhao;Wei Guo - 通讯作者:
Wei Guo
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:
$ 52.15万 - 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:
$ 52.15万 - 项目类别:
Standard Grant
High Reynolds Number Turbulence Research in Cryogenic Helium
低温氦中的高雷诺数湍流研究
- 批准号:
1801780 - 财政年份:2018
- 资助金额:
$ 52.15万 - 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:
$ 52.15万 - 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:
$ 52.15万 - 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:
$ 52.15万 - 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:
$ 52.15万 - 项目类别:
Continuing Grant
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协同模板中的约束信息可视化
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- 项目类别:面上项目
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