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A sliding mesh technique for the finite element simulation of fluid-solid interaction problems by using variable-node elements
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DOI：10.1016/j.compstruc.2013.10.003.png)
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Abstract
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A new sliding mesh technique for finite element simulation of fluid-solid interaction problems with large structural motions is presented in this paper. Fluid meshes surrounding a solid can slide each other to accommodate a rotational motion of the solid, and a fluid mesh outside the sliding interface can translate through a background fluid mesh. Because of relative motions of sliding fluid meshes and independently designed fluid and solid meshes, non-matching meshes occur at their common interfaces. The non-matching meshes are connected by using variable-node elements which guarantee the continuity, the compatibility and the force equilibrium across the interfaces. (C) 2013 Elsevier Ltd. All rights reserved.
Keywords:
Fluid-solid interaction (FSI)
Variable-node elements (VNEs)
Sliding mesh technique
Non-matching meshes
Arbitrary Lagrangian-Eulerian (ALE) formulation
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