Collaborative Research: SHINE: Driving Solar Magnetohydrodynamic (MHD) Simulations with Vector Magnetogram Sequences

合作研究：SHINE：用矢量磁图序列驱动太阳能磁流体动力学 (MHD) 模拟

• 批准号: 0551055
• 负责人: KD Leka
• 金额: $ 21.75万
• 依托单位: NorthWest Research Associates, Incorporated
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-05-01 至 2011-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0551055&HistoricalAwards=false
• 关键词: Collaborative; Research; SHINE; Driving; Solar

The PIs propose to collaborate in developing new techniques for measuring the state of the solar atmosphere and for solving the physical equations governing its evolution. The proposers plan to combine these capabilities so that numerical simulations might be directly driven by observed solar data. To accomplish this, they intend to develop new methods of reducing solar vector magnetogram sequences, optimized for input into simulations as a self-consistent set of boundary conditions for a numerical solution. A semi-implicit code will be used to solve the compressible, time-dependent magnetohydrodynamic (MHD) equations subject to those initial conditions and boundary conditions. The end-to-end capability provided by these new methods will be demonstrated by performing data-driven simulations of at least three solar active regions. Decades of high-quality observations from ground-based and space-based instruments have led researchers to propose several different models for the origin and evolution of coronal mass ejections. Three-dimensional, time-dependent simulations can demonstrate the viability of these models, provided they are appropriately driven. However, only driving these simulations directly with data can identify the model that best describes reality. This proposal will develop the necessary techniques to perform such a test, and will contribute to the development of a national space weather forecasting capability, which will assimilate ongoing observations into large-scale computer simulations that solve the governing equations. All tools developed under this effort will be made available to the solar physics community and to the public.

PI提议合作开发新技术，以衡量太阳大气的状态并解决统治其进化的物理方程。提案者计划将这些功能结合起来，以便可以直接通过观察到的太阳能数据来直接驱动数值模拟。为了实现这一目标，他们打算开发新的减少太阳矢量磁力图序列的新方法，以作为数值解决方案的一组边界条件进行了优化，以输入到模拟中。半显微法规将用于求解受那些初始条件和边界条件约束的可压缩，时间依赖的磁性水力动力学（MHD）方程。这些新方法提供的端到端能力将通过执行至少三个太阳活动区域的数据驱动模拟来证明。从地面和太空仪器中进行数十年的高质量观​​察，导致研究人员提出了几种不同的模型，以实现冠状质量驱逐的起源和演变。只要有适当的驱动，三维，时间依赖性的模拟可以证明这些模型的生存能力。但是，只有直接使用数据驱动这些模拟才能识别最能描述现实的模型。该提案将开发出必要的技术来执行此类测试，并将有助于发展国家太空天气预报的能力，这将使正在进行的观察结果将持续的观察结果融入解决管理​​方程式的大规模计算机模拟中。在这项工作下开发的所有工具都将提供给太阳能物理社区和公众。