Collaborative Research: Advancing turbidity currents: moving sources, polydispersity and aggregation
合作研究:推进浊流:移动源、多分散性和聚集
基本信息
- 批准号:2139277
- 负责人:
- 金额:$ 25.56万
- 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:2022-02-01 至 2024-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Gravity currents are mostly horizontal flows that are driven by density variations in a fluid or by density differences between two fluids. They play a central role in the transport of sediment in lakes, rivers, and oceans, and they are also important in emerging and potentially transformative technologies such as deep-sea mining and geoengineering. Despite a rich history of research on gravity currents, some fundamental scenarios have yet to be explored or remain substantially unresolved. This collaborative project will integrate analytical modeling, numerical simulation and laboratory experimentation with a unique field experimental data set to advance understanding of particle-laden gravity currents. This project has potential for transformative impacts by informing environmental regulations for such emerging industries as deep-sea mining. Deep-sea mining is expected to re-suspend large volumes of sediment in the pristine abyssal ocean environment, and the knowledge and models developed through this project will provide the toolbox needed to assess the evolution of these sediment plumes. The project will provide training for university students at all academic levels and for high-school students who will participate in the project through established programs at MIT and UCSB. The project is divided into three interconnected topics. The first concerns the evolution of gravity and particle-driven currents released from a moving source. The goals are to understand how the ratio of source speed to buoyancy velocity influences the dynamics of the current, investigate the role of background current, and develop empirical models that predict transport processes. The second point of focus is to quantify sediment detrainment from polydisperse particle-driven currents and determine its sensitivity to the particle size and velocity distribution through concurrent laboratory experiments and numerical simulations. Empirical models of polydisperse particle-driven currents will be extended to include entrainment and detrainment and incorporated into the moving source gravity current model. Finally, the role of flocculation and aggregation of particles on the propagation of polydisperse particle-driven currents will be experimentally investigated by systematically varying the sediment’s history, with the goal of developing macroscale numerical models for flocculation and integrating the findings into the moving source model.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.
重力流主要是由流体中的密度变化或两种流体之间的密度差驱动的水平流动。它们在湖泊、河流和海洋的沉积物运输中发挥着核心作用,在深海采矿和地球工程等新兴和潜在的变革性技术中也很重要。尽管对重力流的研究历史悠久,但一些基本情景尚未探索或基本上仍未解决。这个合作项目将把分析建模、数值模拟和实验室实验与独特的现场实验数据集结合起来,以促进对载有颗粒的重力流的理解。该项目有可能通过为深海采矿等新兴行业的环境法规提供信息,产生变革性影响。预计深海采矿将使大量沉积物重新悬浮在原始深海环境中,通过这一项目开发的知识和模型将提供评估这些沉积物羽流演变所需的工具箱。 该项目将为所有学术水平的大学生和高中生提供培训,这些学生将通过麻省理工学院和UCSB的既定项目参与该项目。 该项目分为三个相互关联的主题。第一个是关于重力的演变和从移动源释放的粒子驱动的电流。目标是了解源速度与浮力速度的比率如何影响当前的动态,调查背景电流的作用,并开发预测运输过程的经验模型。第二个重点是量化沉积物从多分散颗粒驱动的电流,并确定其敏感性的颗粒大小和速度分布,通过同步实验室实验和数值模拟。多分散颗粒驱动流的经验模型将被扩展到包括夹带和分离,并纳入移动源重力流模型。最后,将通过系统地改变沉积物的历史,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。
项目成果
期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Gravity currents from moving sources
- DOI:10.1017/jfm.2021.654
- 发表时间:2021-08-17
- 期刊:
- 影响因子:3.7
- 作者:Ouillon, Raphael;Kakoutas, Christos;Peacock, Thomas
- 通讯作者:Peacock, Thomas
Oceanic bottom mixed layer in the Clarion-Clipperton Zone: potential influence on deep-seabed mining plume dispersal
- DOI:10.1007/s10652-023-09920-6
- 发表时间:2023-04
- 期刊:
- 影响因子:2.2
- 作者:S. Chen;R. Ouillon;Carlos Muñoz-Royo;T. Peacock
- 通讯作者:S. Chen;R. Ouillon;Carlos Muñoz-Royo;T. Peacock
The Fluid Mechanics of Deep-Sea Mining
深海采矿的流体力学
- DOI:10.1146/annurev-fluid-031822-010257
- 发表时间:2023
- 期刊:
- 影响因子:27.7
- 作者:Peacock, Thomas;Ouillon, Raphael
- 通讯作者:Ouillon, Raphael
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Thomas Peacock其他文献
パリティ11月号:ラグランジュ協同構造―流体の流れに隠れた骨格
Parity 11月号:拉格朗日协作结构——隐藏在流体流动中的骨架
- DOI:
- 发表时间:
2013 - 期刊:
- 影响因子:0
- 作者:
Thomas Peacock;George Haller : 小松崎民樹 訳 - 通讯作者:
George Haller : 小松崎民樹 訳
3D Stereoscopic PIV visualization of the axisymmetric conical internal wave field generated by an oscillating sphere
- DOI:
10.1007/s00348-012-1454-6 - 发表时间:
2013-02-12 - 期刊:
- 影响因子:2.500
- 作者:
Sasan John Ghaemsaidi;Thomas Peacock - 通讯作者:
Thomas Peacock
Model investigations of discharge plumes generated by deep-sea nodule mining operations
- DOI:
10.1016/j.oceaneng.2018.12.012 - 发表时间:
2019-01-15 - 期刊:
- 影响因子:
- 作者:
Andrew J. Rzeznik;Glenn R. Flierl;Thomas Peacock - 通讯作者:
Thomas Peacock
GGCX promotes Eurasian avian-like H1N1 swine influenza virus adaption to interspecies receptor binding
GGCX 促进欧亚类鸟 H1N1 猪流感病毒适应种间受体结合
- DOI:
10.1038/s41467-025-55903-0 - 发表时间:
2025-01-15 - 期刊:
- 影响因子:15.700
- 作者:
Jiahui Zou;Meijun Jiang;Rong Xiao;Huimin Sun;Hailong Liu;Thomas Peacock;Shaoyu Tu;Tong Chen;Jinli Guo;Yaxin Zhao;Wendy Barclay;Shengsong Xie;Hongbo Zhou - 通讯作者:
Hongbo Zhou
Correction: Oceanic bottom mixed layer in the Clarion-Clipperton Zone: potential influence on deep-seabed mining plume dispersal
- DOI:
10.1007/s10652-024-09979-9 - 发表时间:
2024-07-27 - 期刊:
- 影响因子:2.100
- 作者:
Si-Yuan Sean Chen;Raphael Ouillon;Carlos Muñoz-Royo;Thomas Peacock - 通讯作者:
Thomas Peacock
Thomas Peacock的其他文献
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{{ truncateString('Thomas Peacock', 18)}}的其他基金
Hazards SEES: Advanced Lagrangian Methods for Prediction, Mitigation and Response to Environmental Flow Hazards
Hazards SEES:用于预测、缓解和响应环境流动危害的先进拉格朗日方法
- 批准号:
1520825 - 财政年份:2015
- 资助金额:
$ 25.56万 - 项目类别:
Continuing Grant
The vertical propagation of internal waves through the ocean
内波在海洋中的垂直传播
- 批准号:
1357434 - 财政年份:2014
- 资助金额:
$ 25.56万 - 项目类别:
Standard Grant
Workshop: Uncovering Transport Barriers in Geophysical Flows; Banff International Research Station (BIRS), Banff, Alberta; 22 to 27 September 2013
研讨会:揭示地球物理流中的传输障碍;
- 批准号:
1345227 - 财政年份:2013
- 资助金额:
$ 25.56万 - 项目类别:
Standard Grant
DynSyst_Special_Topics/Collaborative Research: A New Braid Theoretic Approach To Uncovering Transport Barriers In Complex Flows
DynSyst_Special_Topics/合作研究:一种揭示复杂流中传输障碍的新编织理论方法
- 批准号:
1234113 - 财政年份:2012
- 资助金额:
$ 25.56万 - 项目类别:
Standard Grant
Assessing the importance of deep ocean topographic scattering of low mode internal tides
评估低模内潮汐的深海地形散射的重要性
- 批准号:
1129757 - 财政年份:2011
- 资助金额:
$ 25.56万 - 项目类别:
Standard Grant
CAREER: From the Lab to the Ocean: Experimental modeling of Internal Tide Generation by Topography
职业:从实验室到海洋:地形产生内潮汐的实验模型
- 批准号:
0645529 - 财政年份:2007
- 资助金额:
$ 25.56万 - 项目类别:
Continuing Grant
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