CAREER: Studies of 3D Dynamics in the Global Magnetosphere Using High-performance Heterogeneous Computing Architectures

职业：使用高性能异构计算架构研究全球磁层中的 3D 动力学

• 批准号: 1056898
• 负责人: Kai Germaschewski
• 金额: $ 49.59万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-02-15 至 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1056898&HistoricalAwards=false
• 关键词: CAREER; Studies; 3D; Dynamics; Global

This is a cross-disciplinary project to develop a new version of the OpenGGCM (Open geospace general circulation model) magnetohydrodynamic (MHD) code that will run efficiently on a variety of computing environments. The MHD code will include a generalized Ohm's law and the Hall term to enable it to accurately model magnetic reconnection as well as plasma instabilities in thin current sheets. The code will be used to investigate the impact of Hall physics and secondary instabilities on 3D reconnection and generation of Flux Transfer Events (FTEs) at the dayside, as well as on substorm onset at the night side. The project will also investigate the interplay between the ballooning instability near Earth and magnetic reconnection in the mid-tail. The project will develop and utilize an automatic computer code generation tool that allows the user to create source code appropriate to a specific computer architecture. In addition to examining the physics of the magnetosphere using this code, the project will also make the code generating tool into an open source toolkit that will have broad applicability to science applications that are based on what are known as stencil computations.Magnetic reconnection and secondary instabilities of thin current sheets are of crucial importance to understanding the dynamics of Earth's global magnetosphere and space weather. Incorporating and understanding realistic physics into global magnetospheric codes is an important step in modeling and forecasting space weather. The computational methods that will be developed are applicable to a large range of applications in science and engineering that involve solving partial differential equations. The proposal also has an extensive educational component. It includes curriculum enhancement and creation of a summer seminar series to form a computational community at UNH, targeting graduate students, postdocs and faculty. A space weather demonstration device based on the PlayStation-3 with also be developed and used for outreach to students. This outreach program will develop different versions of the demonstration applicable to a wide range of students, from high school all the way through to graduate school.

这是一个跨学科项目，旨在开发新版本的OpenGGCM（Open Geospace General Crockulation Model）磁性水力学（MHD）代码，该代码将在各种计算环境上有效运行。 MHD代码将包括一般欧姆定律和HALL术语，以使其能够准确地对磁性重新连接以及薄电流板中的等离子体不稳定性进行建模。该代码将用于研究Hall物理和二级不稳定性对时代的3D重新连接和生成通量转移事件（FTE）的影响，以及在夜间侧面的实量发作。该项目还将研究地球附近的气球不稳定性与中尾磁重新连接之间的相互作用。该项目将开发并利用自动计算机代码生成工具，该工具允许用户创建适合特定计算机体系结构的源代码。 In addition to examining the physics of the magnetosphere using this code, the project will also make the code generating tool into an open source toolkit that will have broad applicability to science applications that are based on what are known as stencil computations.Magnetic reconnection and secondary instabilities of thin current sheets are of crucial importance to understanding the dynamics of Earth's global magnetosphere and space weather.将现实的物理学纳入全球磁层代码是建模和预测空间天气的重要步骤。将要开发的计算方法适用于涉及解决部分微分方程的科学和工程中的大量应用。该提案还具有广泛的教育组成部分。它包括夏季研讨会系列的课程增强和创建，以在UNH组成一个计算社区，针对研究生，博士后和教职员工。还开发了基于PlayStation-3的太空天气示范设备，并用于向学生推广。 该外展计划将开发出适用于从高中到研究生院的各种学生的演示的不同版本。