Studies of turbulence, transport and flows in the Large Plasma Device

大型等离子体装置中的湍流、输运和流动研究

基本信息

  • 批准号:
    0903913
  • 负责人:
  • 金额:
    $ 40.23万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-08-01 至 2013-01-31
  • 项目状态:
    已结题

项目摘要

The goal of this project is to gain understanding of the interaction between flows, turbulence, and transport in a laboratory plasma. Experiments will be performed using the Large Plasma Device (LAPD), which is part of the Basic Plasma Science Facility at UCLA. The work would build on the recent observation of a particle confinement transition triggered by bias-driven rotation in LAPD. In the proposed work, focus will be given to the role of parallel boundary conditions in turbulence, transport and flows in LAPD. A set of limiters will be constructed in order to establish well-defined, yet changeable, parallel boundary conditions in the edge of LAPD. Modifications in turbulence, transport, and driven and spontaneous flows with parallel boundary conditions will be investigated. A second focus will be on angular momentum transport and flow generation in LAPD, emphasizing a study of the role of intermittent convection in these processes. In addition, a set of topics for alternate lines of research are discussed, including studies of the scaling of the transition threshold with plasma parameters, and the axial dependence of driven flows and the confinement transition. The intellectual merit of the proposed research stems from the fundamental importance of turbulence, transport, and flows in a wide range of plasmas. The proposed detailed study of the interplay between transport, turbulence and flows will have an impact on a wide range of subfields of plasma physics, including magnetic confinement fusion, and space and astrophysical plasma physics.The broader impacts of the proposed work would be realized in both the research and educational activites. A major focus of the proposal is the training of one graduate student, working toward a PhD, and one undergraduate student. The proposed work will complement an existing effort in collaboration with LLNL to compare measurements in LAPD to predictions of the 3D Braginskii fluid code BOUT. The detailed measurements possible in LAPD provide a significant test of the predictive capabilities of a simulation code such as BOUT. Establishing a predictive capability in turbulence and transport in magnetized plasmas is important in advancing understanding of fundamental plasma processes in a variety of settings, but is especially critical to progress in magnetic fusion energy research. The work proposed here will, in part, help establish LAPD as an experimental platform for testing the capabilities of current (e.g., BOUT) and planned (e.g., edge kinetic simulation) massively-parallel turbulence simulation codes.This proposal was submitted to the NSF-DoE Partnership in Plasma Science and Engineering joint solicitation 08-589. This award is being funded by the Plasma Physics Program in the Division of Physics.
该项目的目标是了解实验室等离子体中流动、湍流和输运之间的相互作用。实验将使用大型等离子体设备(LAPD)进行,该设备是加州大学洛杉矶分校基础等离子体科学设施的一部分。这项工作将建立在最近对LAPD中由偏置驱动的旋转引发的粒子约束跃迁的观察之上。在本文的工作中,重点将放在平行边界条件在LAPD湍流、输运和流动中的作用。为了在LAPD边缘建立定义良好但可变化的平行边界条件,将构造一组限制器。在湍流,输运和驱动和自发流动与平行边界条件的修改将被调查。第二个重点将是在LAPD的角动量传输和流动的产生,强调间歇性对流在这些过程中的作用的研究。此外,本文还讨论了一系列可供选择的研究方向,包括等离子体参数对跃迁阈值的缩放研究,以及驱动流和约束跃迁的轴向依赖性。所提出的研究的智力价值源于大范围等离子体中的湍流、输运和流动的基本重要性。对输运、湍流和流动之间相互作用的详细研究将对等离子体物理学的广泛子领域产生影响,包括磁约束聚变、空间和天体物理等离子体物理学。拟议工作的更广泛影响将在研究和教育活动中实现。该提案的主要重点是培养一名攻读博士学位的研究生和一名本科生。拟议的工作将补充与LLNL合作的现有工作,将LAPD的测量结果与3D Braginskii流体代码BOUT的预测进行比较。LAPD中可能的详细测量为模拟代码(如BOUT)的预测能力提供了重要的测试。在磁化等离子体中建立湍流和输运的预测能力对于促进对各种情况下基本等离子体过程的理解非常重要,但对于磁聚变能研究的进展尤为关键。这里提出的工作将在一定程度上帮助建立LAPD作为测试当前(例如,BOUT)和计划(例如,边缘动力学模拟)大规模并行湍流模拟代码能力的实验平台。该提案已提交给NSF-DoE等离子体科学与工程合作项目联合招标08-589。该奖项由物理系等离子体物理项目资助。

项目成果

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Troy Carter其他文献

Role of nonlinear coupling and density fluctuations in magnetic-fluctuation-induced particle transport.
非线性耦合和密度涨落在磁涨落引起的粒子输运中的作用。
  • DOI:
    10.1103/physrevlett.108.175001
  • 发表时间:
    2012
  • 期刊:
  • 影响因子:
    8.6
  • 作者:
    Liang Lin;W. Ding;D. Brower;W. Bergerson;Troy Carter;T. Yates;A. Almagri;B. Chapman;J. Sarff
  • 通讯作者:
    J. Sarff
Modeling of plasma turbulence and transport in the Large Plasma Device
大型等离子体装置中等离子体湍流和传输的建模
  • DOI:
    10.1063/1.3527987
  • 发表时间:
    2010
  • 期刊:
  • 影响因子:
    2.2
  • 作者:
    P. Popovich;M. Umansky;Troy Carter;B. Friedman
  • 通讯作者:
    B. Friedman
Pomalidomide is teratogenic in rats and rabbits and can be neurotoxic in humans
泊马度胺对大鼠和兔子具有致畸性,对人类具有神经毒性

Troy Carter的其他文献

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{{ truncateString('Troy Carter', 18)}}的其他基金

SBIR Phase I: Climate analysis at scale through mapping biomass, water restoration, and soil carbon sequestration
SBIR 第一阶段:通过绘制生物量、水恢复和土壤碳封存进行大规模气候分析
  • 批准号:
    2112321
  • 财政年份:
    2021
  • 资助金额:
    $ 40.23万
  • 项目类别:
    Standard Grant
Basic Plasma Science Facility Renewal
基础等离子体科学设施更新
  • 批准号:
    1561912
  • 财政年份:
    2016
  • 资助金额:
    $ 40.23万
  • 项目类别:
    Continuing Grant
Studies of Flows, Turbulence and Transport in the Large Plasma Device
大型等离子体装置中的流动、湍流和输运研究
  • 批准号:
    1202007
  • 财政年份:
    2012
  • 资助金额:
    $ 40.23万
  • 项目类别:
    Continuing Grant
CAREER: Laboratory studies of large amplitude Alfven waves
职业:大振幅阿尔文波的实验室研究
  • 批准号:
    0547572
  • 财政年份:
    2006
  • 资助金额:
    $ 40.23万
  • 项目类别:
    Continuing Grant

相似国自然基金

流体湍流运动的相关数学分析
  • 批准号:
    10971174
  • 批准年份:
    2009
  • 资助金额:
    25.0 万元
  • 项目类别:
    面上项目

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Turbulence and transport in the presence of electromagnetic fluctuations and supra-thermal particles in tokamaks.
托卡马克中电磁波动和超热粒子存在下的湍流和传输。
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    EP/W026341/1
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NSF-BSF: Multi-ion Transport, Rotation, and Turbulence in Hydrodynamic Compression of Z-pinch
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TDYNO:磁化湍流中的脉动发电机、热传输和离子加速
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Collaborative Research: Extreme Thermal Transport Events in Supersonic and Hypersonic Shock Wave-Turbulence Interactions
合作研究:超音速和高超音速冲击波-湍流相互作用中的极端热传输事件
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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:超音速和高超音速冲击波-湍流相互作用中的极端热传输事件
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