计算机科学 ›› 2019, Vol. 46 ›› Issue (8): 89-94.doi: 10.11896/j.issn.1002-137X.2019.08.014
颜辉1, 朱伯靖2, 万文1, 钟英1, DavidAYune3
YAN Hui1, ZHU Bo-jing2, WAN Wen1, ZHONG Yin1, David A YUNE3
摘要: 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。
中图分类号:
[1]PONTIN D I.Three-dimensional magneticreconnection regi- mes:A review [J].Advances in Space Research,2011,47(9):1508-1522. [2]YAMADA M,YOO J S,ALMONTE J J,et al.Conversion of magnetic energy in magnetic reconnection layer of a laboratory plasma[J].Nature Communications,2014,5:4774. [3]PARNELL C E,MACLEAN R C,HAYNES A L,et al.3D magnetic reconnection[J].Astrophysical Dynamics:From Ga-laxies to Starts Proceedings IAU Symposium,2010,6(S271),227-238. [4]THURGOOD J O,PONTIN D I,MCLAUGHLIN J A.Three-dimensional Oscillatory magnetic reconnection[J].The Astrophysical Journal,2017,844(2):1-12. [5]PARNELL C E,HAYNES A L,GALSGAARD K.Structure of magnetic separators and separator reconnection[J].Journal of Geophysical Research,2010,115:A02102. [6]NAKAMURA T M,HASEGAWA H,DAUGHTON W,et al.Turbulent mass transfer caused by vortes induced reconnection in collisionless magnetospheric plasmas[J].Nature Communications,2017,8(1):1582. [7]DAUGHTON W,ROYTERSHTEYN V,KARIMABADI H,et al.Role of electron physics in the development of turbulent magnetic reconnection in collisionless plasmas[J].Nature Physics,2011,7(7):539-542. [8]MUÑOZ P A,JAIN N,KILIAN P,et al.A new hybrid code (CHIEF) implementing the inertial electron fluid equation without approximation[J].Computer Physics Communications,2018,224:245-264. [9]FUJIMOTO K,SYDORA R.Plasmoid-induced turbulence in collisionless magnetic reconnection[J].Physical Review Letters,2012,109(26):265004. [10]FUJIMOTO K.Studies on large-scale evolution of magnetic reconnection using full particle simulations with adaptive mesh refinement technique[D].Kyoto:Kyoto University Japan,2005. [11]FUJIMOTO K.Possible plasma instabilities and electron hea- tings in the downstream region of the X-type neutral line[D].Kyoto:Kyoto University.Japan,2003. [12]FUJIMOTO K.Three-dimensional outflow jets generated in collisionless magnetic reconnection[J].Geophysical Research Letters,2016,43(20):557-564. [13]ZHU B J,LIN J.Applications and Development in Particle-in-Cell Methods for Investigating Large-Scale Turbulent Magnetic Reconnection[J].Progress in Astronomy,2016,34(4):459-476.(in Chinese) 朱伯靖,林隽.粒子云网格方法在大尺度湍流磁重联研究中的应用和进展[J].天文学进展,2016,34(4):459-476. [14]ZHU B J.Application ofsupercomputing-based HPIC-LBM (hybrid particle in cell & lattice Boltzmann method) onmagne-tic energy dissipation mechanism in large scale turbulent magne-tic[C]∥Asis-Pacific Regional IAU Meeting.2017. [15]CHENG H H,QIAO YC,LIU C,et al.Extended hybrid pressure and velocity boundary conditions for D3Q27 lattice Boltzmann model[J].Applied Mathematical Modelling,2012,36(5):2031-2055. [16]ZHU B J,YAN H,YUEND A.Electron acceleration in interac- tion of magnetic islands in large temporal-spatial turbulent magnetic reconnection[J].Earth and Planetary Physics,2019,3(1):17-25. |
[1] | 李浩东, 胡洁, 范勤勤. 基于并行分区搜索的多模态多目标优化及其应用 Multimodal Multi-objective Optimization Based on Parallel Zoning Search and Its Application 计算机科学, 2022, 49(5): 212-220. https://doi.org/10.11896/jsjkx.210300019 |
[2] | 陈国良, 张玉杰. 并行计算学科发展历程 Development of Parallel Computing Subject 计算机科学, 2020, 47(8): 1-4. https://doi.org/10.11896/jsjkx.200600027 |
[3] | 汪洋, 李鹏, 季一木, 樊卫北, 张玉杰, 王汝传, 陈国良. 高性能计算与天文大数据研究综述 High Performance Computing and Astronomical Data:A Survey 计算机科学, 2020, 47(1): 1-6. https://doi.org/10.11896/jsjkx.190900042 |
[4] | 贾迅, 钱磊, 邬贵明, 吴东, 谢向辉. FPGA应用于高性能计算的研究现状和未来挑战 Research Advances and Future Challenges of FPGA-based High Performance Computing 计算机科学, 2019, 46(11): 11-19. https://doi.org/10.11896/jsjkx.191100500C |
[5] | 张云泉. 2018年中国高性能计算机发展现状分析与展望 State-of-the-art Analysis and Perspectives of 2018 China HPC Development 计算机科学, 2019, 46(1): 1-5. https://doi.org/10.11896/j.issn.1002-137X.2019.01.001 |
[6] | 司雨濛,韦建文,Simon SEE,林新华. 星系分组算法的并行设计与优化:SGI系统与分布式集群对比 Parallel Design and Optimization of Galaxy Group Finding Algorithm on Comparation of SGI and Distributed-memory Cluster 计算机科学, 2017, 44(10): 80-84. https://doi.org/10.11896/j.issn.1002-137X.2017.10.015 |
[7] | 徐琪,程耀东,陈刚. 高能物理环境中混合存储系统的设计与优化 Design and Optimization of Hybrid Storage System in HEP Environment 计算机科学, 2017, 44(10): 75-79. https://doi.org/10.11896/j.issn.1002-137X.2017.10.014 |
[8] | 黄秋兰,李海波,石京燕,孙震宇,伍文静,程耀东,程振京. 基于Openstack的高能物理虚拟计算集群系统及应用 Openstack-based Virtualized Computing Cluster and Application for High Energy Physics 计算机科学, 2017, 44(10): 59-63. https://doi.org/10.11896/j.issn.1002-137X.2017.10.011 |
[9] | 钱迎进,李永刚,汪毅,周琳琦. Lustre文件系统元数据服务恢复机制的改进 Improvement of Recovery Mechanism for Lustre Metadata Service 计算机科学, 2015, 42(9): 177-182. https://doi.org/10.11896/j.issn.1002-137X.2015.09.034 |
[10] | 王一超,秦强,施忠伟,林新华. 在Intel Knights Corner和NVIDIA Kepler架构上OpenACC的性能可移植性分析 Performance Portability Evaluation for OpenACC on Intel Knights Corner and NVIDIA Kepler 计算机科学, 2015, 42(1): 75-78. https://doi.org/10.11896/j.issn.1002-137X.2015.01.017 |
[11] | 黄秋兰,李莎,程耀东,陈刚. 高能物理计算环境中KVM虚拟机的性能优化与应用 Performance Optimization and Application of KVM in HEP Computing Environment 计算机科学, 2015, 42(1): 67-70. https://doi.org/10.11896/j.issn.1002-137X.2015.01.015 |
[12] | 程耀东,汪璐,黄秋兰,陈刚. 高能物理计算环境中存储系统的设计与优化 Design and Optimization of Storage System in HEP Computing Environment 计算机科学, 2015, 42(1): 54-58. https://doi.org/10.11896/j.issn.1002-137X.2015.01.012 |
[13] | 李智佳,胡翔,焦莉,王伟锋. 基于随机Petri网的高性能计算系统作业调度及InfiniBand网络互连的性能分析 Performance Evaluation of Job Scheduling and InfiniBand Network Interconnection in High Performance Computing System Based on Stochastic Petri Nets 计算机科学, 2015, 42(1): 33-37. https://doi.org/10.11896/j.issn.1002-137X.2015.01.007 |
[14] | 李静梅,王雪,吴艳霞. 一种改进的优先级列表任务调度算法 Improved Priority List Task Scheduling Algorithm 计算机科学, 2014, 41(5): 20-23. https://doi.org/10.11896/j.issn.1002-137X.2014.05.004 |
[15] | 王文义,王春霞,王杰. 基于CMP多核集群的混合并行编程技术研究 Research on Hybrid Parallel Programming Technique Based on CMP Multi-cure Cluster 计算机科学, 2014, 41(2): 19-22. |
|