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Towards straightforward use of cell-based smoothed finite element method in fluid-structure interaction

机译:试图在流体-结构相互作用中直接使用基于单元的平滑有限元方法

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摘要

This paper presents a straightforward implementation of cell-based smoothed finite element method (CS-FEM) into fluid-structure interaction from the arbitrary Lagriangian-Eulerian perspective. Identical to the practice in solid mechanics, CS-FEM is directly applied to viscous stress and pressure Poisson equation in fluid problem. Minimum programming efforts are thus required to modify existing in-house codes. Following an efficient grid moving strategy, partitioned implicit coupling scheme based upon fixed-point iterations is adopted to interconnect individual fields. The proposed approach is validated against previously published data for several benchmarks. Visible improvements are exposed in predicted results along with flow-induced phenomena.
机译:本文从任意Lagriangian-Eulerian角度提出了将基于单元的平滑有限元方法(CS-FEM)直接应用于流体-结构相互作用的方法。与固体力学中的实践相同,CS-FEM直接应用于流体问题中的粘性应力和压力泊松方程。因此,需要最少的编程工作来修改现有的内部代码。遵循有效的网格移动策略,采用基于定点迭代的分区隐式耦合方案来互连各个字段。针对多个基准,针对先前发布的数据对提出的方法进行了验证。预测结果以及流动引起的现象都显示出明显的改进。

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