1226 Expand Type Mesh Update Scheme for FSI Problem and It's Application
Yoshihiro Taki, Akihiro KUDOU, Akihiro KOIKE · The proceedings of the JSME annual meeting · 2007
We introduce a robust mesh update scheme on FSI problem where a fluid region is subjected to large deformation. As a starting mesh, we prepare a micro-size mesh, named mother model, which has the same geometry to analysis region. Then we move the surface nodes to adjust boundary configuration and relocate the internal nodes in the way satisfied by Laplace equation. During consecutive deformation steps, we compute a following mesh based on not current configuration but original mother mesh. It may possible to require a single mesh throughout whole processes undergoing large deformation. We might save the cost of replacing the meshes when mesh is distorted heavily. It does not affect the element connectivity so that we require only one time inversion of stiffness equation. It suggests us that the selection of adequate mother model from a variety of prepared configuration leads to an idea of a conventional mesh generator. Once we create the library consists of a set of micro-mother model and corresponding standard analysis model, it is easy to get the modified geometry mesh from standard one.