Reference : Hybridized enriched space-time finite element method for analysis of thin-walled stru...
Scientific journals : Article
Engineering, computing & technology : Civil engineering
Computational Sciences
Hybridized enriched space-time finite element method for analysis of thin-walled structures immersed in generalized Newtonian fluids
Zilian, Andreas mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Netuzhylov, H. [Technische Universität Braunschweig, Computational Sciences in Engineering, Beethovenstraße 51, 38106 Braunschweig, Germany]
Computers & Structures
Yes (verified by ORBilu)
[en] Embedded thin structure ; Enriched space-time approximation ; Fluid-structure interaction ; Strong coupling ; Approximation spaces ; Enriched space-time finite elements ; Fluid-structure interaction problem ; Generalized Newtonian fluid ; Hybrid interface ; Non-smooth ; Numerical treatments ; Simultaneous solution ; Space-time finite element method ; Thin structure ; Velocity-based ; Compressible flow ; Fluid structure interaction ; Fluids ; Lagrange multipliers ; Thin walled structures ; Finite element method
[en] The paper addresses the numerical treatment of a specific class of fluid-structure interaction problems: flow-immersed thin structures undergoing considerable motion and deformation. The simultaneous solution procedure uses a mixed-hybrid velocity-based formulation of both fluid and structure discretized by a stabilized time-discontinuous space-time finite element method. The continuity at the interface is ensured by a localized mixed-hybrid interface method avoiding Lagrange multipliers and penalty approaches. The XFEM is utilized for enrichment of the approximation space of the fluid variables in order to represent non-smooth (discontinuous) solution features resulting from immersing a thin structure in a fluid. © 2010 Elsevier Ltd. All rights reserved.

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