YNAO OpenIR  > 太阳物理研究组
Exploring the Role of Turbulent Acceleration and Heating in Fractal Current Sheet of Solar Flare from Hybrid PIC and LBM Virtual Test
Zhu BJ(朱伯靖)1,2; Lin J(林隽)1,2
会议录名称Proceedings of American Geophysical Union (AGU) FALL MEETING
2016-12
DOI10.13140/RG.2.2.26293.47841
产权排序第1完成单位
收录类别其他
会议名称2016 American Geophysical Union (AGU) FALL MEETING
会议日期2016-12-10
会议地点San Francisco, USA
摘要

The role of turbulent acceleration and heating in the fractal magnetic reconnection of solar flares is still not clear, especially at the X-point in the diffusion region. At virtual test aspect, it is hardly to quantitatively analyze the vortex generation, turbulence evolution, particle acceleration and heating in the magnetic islands coalesce in fractal manner, formatting into largest plasmid and ejection process in diffusion region through classical magnetohydrodynamics numerical method. With the development of physical particle numerical method (particle in cell method [PIC] , Lattice Boltzmann method [LBM] ) and high performance computing technology in recently two decades. Kinetic-dynamic simulation has developed into an effectively manner to exploring the role of magnetic field and electric field turbulence in charged particles acceleration and heating process, since all the physical aspects relating to turbulent reconnection are taken into account. In this paper, the LBM based lattice DxQy grid and extended distribution are added into charged-particles-to-grid-interpolation of PIC based finite difference time domain scheme and Yee Grid, the hybrid PIC-LBM simulation tool is developed to investigating turbulence acceleration on TIANHE-2. The actual solar coronal condition (L≈105Km,B≈50-500G,T≈5×106K, n≈108-109, mi/me≈500-1836) is applied to study the turbulent acceleration and heating in solar flare fractal current sheet. At stage I, magnetic islands shrink due to magnetic tension forces, the process of island shrinking halts when the kinetic energy of the accelerated particles is sufficient to halt the further collapse due to magnetic tension forces, the particle energy gain is naturally a large fraction of the released magnetic energy. At stage II and III, the particles from the energized group come in to the center of the diffusion region and stay longer in the area. In contract, the particles from non energized group only skim the outer part of the diffusion regions. At stage IV, the magnetic reconnection type nano-plasmoid (200km) stop expanding and carrying enough energy to eject particles as constant velocity. Last, the role of magnetic field turbulence and electric field turbulence in electron and ion acceleration at the diffusion regions in solar flare fractural current sheet is given.

语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学 ; 理学::天文学
引用统计
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/12336
专题太阳物理研究组
作者单位1.Yunnan Obseratories, Chinese Academy of Sciences, 110 Box, Guandu District, Kunming, 650216, P.R. China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, P.R. China
推荐引用方式
GB/T 7714
Zhu BJ,Lin J. Exploring the Role of Turbulent Acceleration and Heating in Fractal Current Sheet of Solar Flare from Hybrid PIC and LBM Virtual Test[C],2016.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Exploring the Role o(12140KB)会议论文 开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zhu BJ(朱伯靖)]的文章
[Lin J(林隽)]的文章
百度学术
百度学术中相似的文章
[Zhu BJ(朱伯靖)]的文章
[Lin J(林隽)]的文章
必应学术
必应学术中相似的文章
[Zhu BJ(朱伯靖)]的文章
[Lin J(林隽)]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Exploring the Role of Turbulent Acceleration and Heating in Fractal Current Sheet of Solar Flare from Hybrid PIC and LBM Virtual Test.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。