Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
510272 | Computers & Structures | 2014 | 14 Pages |
•We proposed an efficient sliding mesh technique to prevent severe fluid mesh distortion.•Fluid meshes can slide each other to accommodate a rotational motion of the solid.•Fluid mesh outside the sliding interface can translate through a background fluid mesh.•Variable node elements (VNEs) connect non-matching meshes sliding each.•A fully coupled equation of FSI problems can be solved efficiently in a single computational domain.
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.