权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Understanding and modelling kinetic turbulence in magnetized plasmas

理解和模拟磁化等离子体中的动力学湍流

基本信息

批准号：
EP/P02064X/1
负责人：
Bogdan Teaca
金额：
$ 11.51万
依托单位：
Coventry University
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FP02064X%2F1
关键词：
Understanding modelling kinetic turbulence magnetized

项目摘要

Plasma physics is at the core of the UK Magnetic Fusion Research Program, an important pillar of the EPSRC's Energy theme. The generation of electrical power via magnetic confinement fusion represents a promising endeavour: aiming to provide an abundant, inexpensive, clean, safe and reliable source of energy that can support a thriving economy, while at the same time offering a viable alternative to fossil fuels as a way to tackle global environmental challenges. Magnetic confinement fusion makes use of strong magnetic fields to confine the fusion plasma fuel in a series of nested torus shaped magnetic surfaces, in a device known as a tokamak. Turbulence in plasma represents a key impediment to this objective, as turbulent mixing is known to enhance the transport of particles and heat across magnetic surfaces, leading to the eventual loss of plasma confinement that stops the fusion reaction. Understanding the proper interactions in plasma turbulence, interactions that occur at physical scales captured only by kinetic theories in a six dimensional phase space, allows for correct implementation of turbulence models. These models can be employed for tokamak transport studies, which in turn can determine the most efficient operational regime of current machines and directly impact the design of future tokamak reactors. As plasma turbulence at kinetic levels is poorly understood to this day, while adequate kinetic turbulence models are yet to be developed, we turn towards space plasma configurations to offer simpler environments for isolating fundamental turbulence dynamics. This project will tackle plasma turbulence from a kinetic perspective, addressing fundamental questions pursued in the solar wind academic community, such as the identification of the dynamical route used for the dissipation of small scale turbulence energy and, at the same time, develop practical solutions in the form of new knowledge-based turbulence modes that will directly aid fusion research (a promising long term industrial goal).The work will unite collaborators from national (Culham Centre for Fusion Energy) and international (Max-Planck Institute for Plasma Physics, Germany and University of California, Los Angeles, US) institutions, while being led by a researcher based at Coventry University.

等离子体物理学是英国磁聚变研究计划的核心，也是 EPSRC 能源主题的重要支柱。通过磁约束聚变发电代表了一项充满希望的努力：旨在提供丰富、廉价、清洁、安全和可靠的能源，以支持繁荣的经济，同时提供化石燃料的可行替代品，作为应对全球环境挑战的一种方式。磁约束聚变利用强磁场将聚变等离子体燃料限制在托卡马克装置中的一系列嵌套环面形状的磁性表面中。等离子体中的湍流是实现这一目标的一个关键障碍，因为众所周知，湍流混合会增强粒子和热量在磁性表面上的传输，最终导致等离子体约束丧失，从而停止聚变反应。了解等离子体湍流中的正确相互作用，即仅通过六维相空间中的动力学理论捕获的物理尺度上发生的相互作用，可以正确实现湍流模型。这些模型可用于托卡马克输运研究，从而确定当前机器最有效的运行方式，并直接影响未来托卡马克反应堆的设计。由于迄今为止对动力学水平的等离子体湍流知之甚少，同时尚未开发出足够的动力学湍流模型，因此我们转向空间等离子体配置，以提供更简单的环境来隔离基本湍流动力学。该项目将从动力学角度解决等离子体湍流，解决太阳风学术界所追求的基本问题，例如识别用于耗散小规模湍流能量的动力学路径，同时以新的基于知识的湍流模式的形式开发实用的解决方案，这将直接帮助聚变研究（一个有前途的长期工业目标）。这项工作将联合来自国家（卡勒姆中心）的合作者。聚变能源）和国际（德国马克斯普朗克等离子体物理研究所和美国加利福尼亚大学洛杉矶分校）机构，同时由考文垂大学的一名研究人员领导。