An Overset Grid Method for Fluid-Structure Interaction

Abstract

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.

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Miller, S. , Campbell, R. , Elsworth, C. , Pitt, J. and Boger, D. (2014) An Overset Grid Method for Fluid-Structure Interaction. World Journal of Mechanics, 4, 217-237. doi: 10.4236/wjm.2014.47023.

Conflicts of Interest

The authors declare no conflicts of interest.

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