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Physical modeling and high-performance GPU computing for characterization, interception, and disruption of hazardous near-Earth objects.

机译:物理建模和高性能GPU计算,用于表征,拦截和破坏危险的近地物体。

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摘要

For the past few decades, both the scientific community and the general public have been becoming more aware that the Earth lives in a shooting gallery of small objects. We classify all of these asteroids and comets, known or unknown, that cross Earth's orbit as near-Earth objects (NEOs). A look at our geologic history tells us that NEOs have collided with Earth in the past, and we expect that they will continue to do so. With thousands of known NEOs crossing the orbit of Earth, there has been significant scientific interest in developing the capability to deflect an NEO from an impacting trajectory. This thesis applies the ideas of Smoothed Particle Hydrodynamics (SPH) theory to the NEO disruption problem. A simulation package was designed that allows efficacy simulation to be integrated into the mission planning and design process. This is done by applying ideas in high-performance computing (HPC) on the computer graphics processing unit (GPU). Rather than prove a concept through large standalone simulations on a supercomputer, a highly parallel structure allows for flexible, target dependent questions to be resolved. Built around nonclassified data and analysis, this computer package will allow academic institutions to better tackle the issue of NEO mitigation effectiveness.
机译:在过去的几十年中,科学界和公众都越来越意识到地球生活在一个小物体的射击场中。我们将所有已知的或未知的,穿过地球轨道的小行星和彗星归类为近地天体(NEO)。回顾我们的地质历史告诉我们,近地天体过去曾与地球相撞,我们希望它们会继续如此。随着成千上万的已知近地天体越过地球轨道,人们对发展使近地天体偏离撞击轨迹的能力产生了重大的科学兴趣。本文将光滑粒子流体动力学(SPH)理论的思想应用于NEO破坏问题。设计了一个模拟程序包,可以将功效模拟集成到任务计划和设计过程中。这是通过在计算机图形处理单元(GPU)的高性能计算(HPC)中应用思想来完成的。高度并行的结构无需通过超级计算机上的大型独立模拟来证明概念,而是可以解决与目标相关的灵活问题。该计算机程序包以未分类的数据和分析为基础,将使学术机构能够更好地解决NEO缓解效果的问题。

著录项

  • 作者

    Kaplinger, Brian Douglas.;

  • 作者单位

    Iowa State University.;

  • 授予单位 Iowa State University.;
  • 学科 Applied Mathematics.;Engineering Aerospace.
  • 学位 Ph.D.
  • 年度 2013
  • 页码 100 p.
  • 总页数 100
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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