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基于超算暨HPIC-LBM的大时空尺度三维湍流磁重联数值模拟研究
Alternative TitleHPIC-LBM Method Based Simulation of Large Temporal-Spatial Scale 3D Turbulent Magnetic Reconnection on Supercomputer
颜辉1; 朱伯靖2; 万文1; 钟英1; David A Yune3
Source Publication计算机科学(Computer Science)
2019
Volume46Issue:8Pages:89-94
DOI0.11896/j.issn.1002-137X.2019.08.014
ClassificationO124 ; O453
Contribution Rank第2完成单位
Indexed ByCSCD ; 核心
KeywordHpic-lbm 三维湍流磁重联 大时空尺度 磁能转移-释放-耗散 高能粒子加速 高性能计算
Abstract

大时空尺度湍流磁重联(LTSTMR)是空间物理、太阳物理、宇宙学领域中一种普遍存在的爆发现象。磁能转移-释放-耗散、等离子体加热及高能粒子加速是研究该类现象的核心内容,而研究湍流在LTSTMR中如何起作用是解决以上问题的关键所在。2D/2.5D磁重联模型因其在物理图像简化方面忽略了自然界爆发现象的3D属性和本质。文中基于新型HPIC-LBM粒子算法,在天河2号平台上开展了LTSTMR十万核心级别的数值实验工作。首次获得了太阳大气活动磁重联精细演化(0~500 km)耗散区内oblique不稳定性证据。证明了耗散区内微观集体集合效应宏观表现的3种具体形式:湍流磁场self-generating-organization、湍动等离子体self-feeding-sustaining及磁场与等离子体间的相互作用。该研究为在超算平台上应用三维磁重联模型开展大时空尺度湍流磁重联提供了一种新途径。

Other Abstract

Large temporal-spatial scale turbulent magnetic reconnection (LTSTMR) is a general explosive astrophysical phenomena in space physics, solar physics and cosmology. To investigate this phenome, the mechanism of magnetic energy transfer-release-dissipation, plasma heating and acceleration of high energy particle should be learned, where the key is the role of trubulence. Previous 2D/2.5D simulation can only provide simplified physical pictures, which ignores the 3D nature and properties. By HPIC-LBM simulation on Tianhe-2 from National Supercomputer Center in Guang Zhou (NSCCGZ) with up to 100000 CPU cores, the existence of oblique instability was firstly proved from fine structure simulation (0~500km) of solar atmosphere activities. It also presented three kind of macroscopic representation inside the dissipation area: self-generation-organization, self-feeding-sustaining and interaction between magnetic field and plasma. This research provides a new tool for investigating 3D LTSTMR phenomenon on supercomputer.

Funding Project中国科学院前沿局重点项目[QYZDJ-SSW-SLH012] ; 国家自然科学基金广东联合基金[U1501501] ; 广东省引进创新创业团队项目[2016ZT06D211] ; 中山大学超算应用培育专项
Funding Organization中国科学院前沿局重点项目[QYZDJ-SSW-SLH012] ; 国家自然科学基金广东联合基金[U1501501] ; 广东省引进创新创业团队项目[2016ZT06D211] ; 中山大学超算应用培育专项
Language中文
Subject Area物理学 ; 等离子体物理学 ; 计算机科学技术
MOST Discipline Catalogue理学 ; 理学::物理学 ; 工学 ; 工学::计算机科学与技术(可授工学、理学学位)
ISSN1002-137X
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/20584
Collection太阳物理研究组
Corresponding Author朱伯靖
Affiliation1.中山大学国家超级计算广州中心, 广州, 510006
2.中国科学院云南天文台暨中国科学院天文大科学中心, 昆明, 650216
3.美国哥伦比亚大学应用物理和数学系, 纽约, 10027
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
颜辉,朱伯靖,万文,等. 基于超算暨HPIC-LBM的大时空尺度三维湍流磁重联数值模拟研究[J]. 计算机科学(Computer Science),2019,46(8):89-94.
APA 颜辉,朱伯靖,万文,钟英,&David A Yune.(2019).基于超算暨HPIC-LBM的大时空尺度三维湍流磁重联数值模拟研究.计算机科学(Computer Science),46(8),89-94.
MLA 颜辉,et al."基于超算暨HPIC-LBM的大时空尺度三维湍流磁重联数值模拟研究".计算机科学(Computer Science) 46.8(2019):89-94.
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