Magnetohydrodynamic Turbulence, Charged Particle Transport, and Turbulence in the Corona and Interplanetary Medium

磁流体动力湍流、带电粒子输运以及日冕和行星际介质中的湍流

• 批准号: 1063439
• 负责人: William Matthaeus
• 金额: $ 59.23万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-04-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1063439&HistoricalAwards=false
• 关键词: Magnetohydrodynamic; Turbulence; Charged; Particle; Transport

The Principal Investigator (PI) will investigate the basic properties of magnetohydrodynamic (MHD) turbulence, including transport theories for macroscopic or inhomogeneous processes that include turbulence effects and the interfaces between MHD and kinetic physics. He plans an integrated approach using MHD and fluid simulation techniques, transport theory, analytical theories of turbulence and particle diffusion, as well as analysis and interpretation of spacecraft observations. The PI will study energetic particle response to turbulence and he will develop sub-grid scale modeling for large-scale simulations and refined models for turbulence transport and solar modulation of galactic cosmic rays. Given that plasma turbulence is a feature of nonlinear plasma electrodynamics that pervades the universe, this work will impact many fields of plasma physics and astrophysics. MHD turbulence is relevant to solar coronal heating, the acceleration of the solar wind, the distributed heating of the solar wind, the mediation of space weather effects by transfer of energy through the heliosphere, and the transport of solar and galactic energetic charged particles throughout the solar system. This project's educational component includes the supervision of junior personnel, including scientific and career mentoring for a postdoctoral fellow and other research scientists. This effort will make important contributions to new analysis techniques, computational methods, and parallel computing strategies, as well as to industrial and cross-disciplinary applications that are used in many research fields.

主要研究员（PI）将研究磁流体动力学（MHD）湍流的基本特性，包括宏观或非均匀过程的传输理论，包括湍流效应以及MHD和动力学物理之间的界面。他计划使用MHD和流体模拟技术，传输理论，湍流和粒子扩散的分析理论，以及航天器观测的分析和解释的综合方法。PI将研究高能粒子对湍流的响应，他将为大规模模拟开发亚网格尺度建模，并为湍流传输和银河宇宙射线的太阳调制开发精细模型。 鉴于等离子体湍流是遍布宇宙的非线性等离子体电动力学的一个特征，这项工作将影响等离子体物理学和天体物理学的许多领域。MHD湍流与太阳日冕加热、太阳风加速、太阳风的分布式加热、通过日光层的能量转移调节空间天气效应以及太阳和银河系高能带电粒子在整个太阳系的传输有关。该项目的教育部分包括对初级人员的监督，包括对博士后研究员和其他研究科学家的科学和职业辅导。这项工作将为新的分析技术，计算方法和并行计算策略，以及在许多研究领域中使用的工业和跨学科应用做出重要贡献。