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A Method of Simulating Fluid Structure Interactions for Deformable Decelerators.

机译:一种模拟可变形减速器流体结构相互作用的方法。

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摘要

A method is developed for performing simulations that contain fluid-structure interactions between deployable decelerators and a high speed compressible flow. The problem of coupling together multiple physical systems is examined with discussion of the strength of coupling for various methods. A non-monolithic strongly coupled option is presented for fluid-structure systems based on grid deformation. A class of algebraic grid deformation methods is then presented with examples of increasing complexity. The strength of the fluid-structure coupling is validated against two analytic problems, chosen to test the time dependent behavior of structure on fluid interactions, and of fluid on structure interruptions. A one-dimentional material heating model is also validated against experimental data. Results are provided for simulations of a wind tunnel scale disk-gap-band parachute with comparison to experimental data. Finally, a simulation is performed on a flight scale tension cone decelerator, with examination of time-dependent material stress, and heating.
机译:开发了一种用于执行模拟的方法,该模拟包含可部署的减速器和高速可压缩流之间的流体-结构相互作用。通过讨论各种方法的耦合强度来研究将多个物理系统耦合在一起的问题。针对基于网格变形的流体结构系统,提出了一种非整体式强耦合选项。然后介绍了一类代数网格变形方法,并举例说明了复杂性不断提高的情况。针对两个分析问题验证了流固耦合的强度,选择了这两个分析问题来测试结构在流体相互作用时的时效行为以及流体在结构中断时的时效行为。还针对实验数据验证了一维材料加热模型。与实验数据相比,提供的结果可用于模拟风洞规模的磁盘间隙带降落伞。最后,在飞行规模的张力锥减速器上进行了仿真,并检查了随时间变化的材料应力和加热情况。

著录项

  • 作者

    Gidzak, Vladimyr Mykhalo.;

  • 作者单位

    University of Minnesota.;

  • 授予单位 University of Minnesota.;
  • 学科 Engineering Aerospace.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 99 p.
  • 总页数 99
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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