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Feasibility study for shape and topology optimization using Brinkman Volume Penalization.

机译:使用Brinkman体积罚分法进行形状和拓扑优化的可行性研究。

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摘要

The evolution of Optimum Shape Design has gone through many phases and currently is in the process of transition from baseline and intuitive designs to the combination of computer modeling and applied optimization algorithms, which in turn require automated and more robust CFD solvers. In this work the use of Brinkman Volume Penalization is explored for shape and topology optimization. As the implementation is conceptually the same for both optimization methods, with considerably more degrees of freedom during topology optimization, this work elaborates on shape optimization. While the feasibility of Brinkman Volume Penalization with shape optimization is shown only for incompressible cases, the use of this method is also intended for compressible flows. Furthermore, the efficient implementation of Brinkman Volume Penalization necessitates the addition of a mesh refinement technique, which is incorporated through the Adaptive Wavelet Collocation Method. Both compressible and incompressible regimes are investigated, however due to special issues that arise with wave reflections in compressible flows, the use of Multidimensional Navier-Stokes Characteristic Boundary Conditions are explored as well.
机译:最佳形状设计的发展经历了多个阶段,目前正处于从基线和直观设计过渡到计算机建模和应用优化算法相结合的过程中,这反过来又需要自动化且更强大的CFD求解器。在这项工作中,探索了使用Brinkman体积罚分法来优化形状和拓扑。由于两种优化方法的实现在概念上都是相同的,并且在拓扑优化过程中具有更大的自由度,因此这项工作将详细介绍形状优化。尽管仅针对不可压缩的情况显示了使用形状优化进行Brinkman体积罚分的可行性,但此方法的使用也适用于可压缩的流量。此外,Brinkman体积罚分的有效实施需要添加网格细化技术,该技术可通过自适应小波配置方法进行合并。对可压缩状态和不可压缩状态都进行了研究,但是由于可压缩流中的波反射会引起特殊问题,因此还探讨了多维Navier-Stokes特征边界条件的使用。

著录项

  • 作者单位

    University of Colorado at Boulder.;

  • 授予单位 University of Colorado at Boulder.;
  • 学科 Engineering Mechanical.
  • 学位 M.S.
  • 年度 2009
  • 页码 82 p.
  • 总页数 82
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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