An Overset Grid Method for Fluid-Structure Interaction

• 作者: C. W. Elsworth D. A. Boger J. S. Pitt R. L. Campbell Scott T. Miller
• 来源期刊: 力学国际期刊(英文)
• 学科: 物理学
• 关键词: Overset GRID Fluid-Structure Interaction Arbitrary-Lagrangian EULERIAN FINITE Volume FINITE Element Moving Mesh OPENFOAM
• 年，卷（期）: lxgjqkyw_2014,（7）
• 页码范围: 217-237
• 页数: 21页
• 分类号: O35

摘要

An overset grid methodology is developed for the fully coupled analysis of fluid-structure interaction (FSI) problems. The overset grid approach alleviates some of the computational geometry difficulties traditionally associated with Arbitrary-Lagrangian-Eulerian (ALE) based, moving mesh methods for FSI. Our partitioned solution algorithm uses separate solvers for the fluid (finite volume method) and the structure (finite element method), with mesh motion computed only on a subset of component grids of our overset grid assembly. Our results indicate a significant reduction in computational cost for the mesh motion, and element quality is improved. Numerical studies of the benchmark test demonstrate the benefits of our overset mesh method over traditional approaches.