Abstract This work presents a Fluid–Structure Interaction framework for the robust and efficient simulation of strongly coupled problems involving arbitrary large displacements and rotations. We focus on the application of the proposed tool to lightweight membrane-like structures. Nonetheless, all the techniques we present in this work can be applied to both volumetric and volumeless bodies. To achieve this, we rely on the use of embedded mesh methods in the fluid solver to conveniently handle the extremely large deflections and eventual topology changes of the structure. The coupling between the embedded fluid and mechanical solvers is based on an interface residual black-box strategy. We validate our proposal by solving reference benchmarking examples that consider both volumetric and volumeless geometries. Whenever it is possible, we also compare the embedded solution with the one obtained with our reference body fitted solver. Finally we present a real-life application of the presented embedded Fluid–Structure Interaction solver.

中文翻译：

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用于解决强耦合流固耦合问题的嵌入式有限元框架。应用于体积和膜状结构

摘要 这项工作提出了一种流固耦合框架，用于对涉及任意大位移和旋转的强耦合问题进行稳健有效的模拟。我们专注于将所提出的工具应用于轻质膜状结构。尽管如此，我们在这项工作中提出的所有技术都可以应用于有体积的物体和无体积的物体。为了实现这一点，我们依靠在流体求解器中使用嵌入式网格方法来方便地处理结构的极大变形和最终的拓扑变化。嵌入式流体和机械求解器之间的耦合基于界面残差黑盒策略。我们通过解决同时考虑体积和无体积几何的参考基准测试示例来验证我们的建议。只要有可能，我们还将嵌入的解决方案与使用我们的参考体拟合求解器获得的解决方案进行比较。最后，我们展示了所提出的嵌入式流固耦合求解器的实际应用。