Fluid-Structure Interaction in the Context of Shape Optimization and Computational Wind Engineering
Fluid-Structure Interaction in the Context of Shape Optimization and Computational Wind Engineering
复制标题
形状优化和计算风工程背景下的流固耦合
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
K. Bletzinger
中科院分区：
文献类型：
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作者：
M. Hojjat;E. Stavropoulou;T. Gallinger;U. Israel;R. Wüchner;K. Bletzinger
在这篇文章中，提出了一种针对流体流动的轻质薄壁结构（如壳体和膜）的形状优化设计的集成概念。遵循嵌套分析和设计方法，并嵌入用于状态分析的分区 FSI 模拟。通过选择适当的耦合算法来解决耦合问题和灵敏度分析以及描述要优化的形状的不同策略，所获得的模块化允许单一成分适应各种技术应用。耦合接口处的非匹配网格功能支持这种灵活性。这里的重点是计算风工程领域的气动弹性问题。为了确保结果可靠，我们对正确的建模以及目标导向的基准测试进行了研究。此外，在建立封闭设计周期时，特别强调不同形状描述方法的适当组合。最后，通过一个受到湍流风流影响的混合轻质结构的例子证明了整体解决方案和优化策略的成功。
Within this contribution, an integrated concept for the shape optimal design of light-weight and thin-walled structures like shells and membranes subject to fluid flow is presented. The Nested Analysis and Design approach is followed and a partitioned FSI simulation for the state analysis is embedded. The gained modularity allows for the adaption of the single ingredients to various technical applications by choosing appropriate coupling algorithms for the solution of the coupled problem and the sensitivity analysis as well as different strategies to describe the shapes to be optimized. A non-matching grid capability at the coupling interface supports this flexibility. The focus here is on problems of aeroelasticity in the field of Computational Wind Engineering. To ensure reliable results, investigations on the correct modeling as well as goal-oriented benchmarking are carried out. Moreover, special emphasis is given to the appropriate combination of different approaches for shape description in establishing the closed design cycle. Finally, the success of the overall solution and optimization strategy is demonstrated with an example of a hybrid, light-weight structure, subject to turbulent wind flow.