Ab Initio Models of Solar Activity

太阳活动从头算模型

• 批准号: 1144506
• 负责人: Robert Stein
• 金额: $ 3.74万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1144506&HistoricalAwards=false
• 关键词: Ab; Initio; Models; Solar; Activity

The scientific objectives of this research are to understand how internal solar magnetoconvection powers the Suns activity, and how that activity heats the chromosphere and corona and accelerates charged particles to relativistic energies.The approach uses three-dimensional, compressible, finite difference, magnetohydrodynamic (MHD) codes to solve the equations for mass, momentum and internal energy in conservative form plus the induction equation for the magnetic field. A particle in-cell plasma code is used to calculate charged particle acceleration and radiation in regions of reconnecting magnetic fields. The project has requested and been granted a substantial allocation of computer resources on the leadership class Blue Waters system at NCSA.

这项研究的科学目标是了解太阳内部磁对流如何为太阳活动提供动力，以及该活动如何加热色球和日冕并将带电粒子加速到相对论能量。该方法使用三维、可压缩、有限差分、磁流体(MHD)程序来求解守恒形式的质量、动量和内部能量方程，以及磁场的感应方程。粒子胞内等离子体程序用于计算重新连接磁场区域中带电粒子的加速度和辐射。该项目已要求并获准在NCSA的领导班级蓝水系统上分配大量计算机资源。