Reference : Finite element method for strongly-coupled systems of fluid-structure interaction wit...

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a journal
	Discipline(s) :	Engineering, computing & technology : Civil engineering
	Focus Areas :	Computational Sciences
	To cite this reference:	http://hdl.handle.net/10993/11147

Title :	Finite element method for strongly-coupled systems of fluid-structure interaction with application to granular flow in silos
Language :	English
Author, co-author :	Reinstädler, S. [Institute for Structural Analysis, TU Braunschweig, Beethovenstr. 51, 38106 Braunschweig, Germany]
	Zilian, Andreas [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
	Dinkler, D. [Institute for Structural Analysis, TU Braunschweig, Beethovenstr. 51, 38106 Braunschweig, Germany]
Publication date :	2011
Journal title :	Proceedings of the 4th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2011
Pages :	837-849
Peer reviewed :	No
Audience :	International
Event name :	4th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2011
Event date :	20 June 2011 through 22 June 2011
Event place (city) :	Kos
Keywords :	[en] Level-set-method ; Non-newtonian fluid ; Space-time finite elements ; Thin-walled structure ; XFEM ; Elastic solids ; Extended finite element method ; Finite element approximations ; Fluid domain ; Governing equations ; Granular flows ; Loading condition ; Mesh nodes ; Mesh-moving schemes ; Monolithic approach ; Non-Newtonian fluids ; Non-smooth ; Silo discharge ; Solution characteristics ; Space time finite element ; Space-time finite element method ; Stress state ; Structural deformation ; Thin-walled ; Viscoplastic ; Weak form ; Computational methods ; Deformation ; Finite element method ; Flow measurement ; Fluid structure interaction ; Non Newtonian liquids ; Rheology ; Thin walled structures ; Velocity measurement ; Viscous flow ; Granular materials
Abstract :	[en] A monolithic approach to fluid-structure interactions based on the space-time finite element method (STFEM) is presented. The method is applied to the investigation of stress states in silos filled with granular material during discharge. The thin-walled siloshell is modeled in a continuum approach as elastic solid material, whereas the flowing granular material is described by an enhanced viscoplastic non-Newtonian fluid model. The weak forms of the governing equations are discretized by STFEM for both solid and fluid domain. To adapt the matching mesh nodes of the fluid domain to the structural deformations, a mesh-moving scheme using a neo-Hookean pseudo-solid is applied. The finite element approximation of non-smooth solution characteristics is enhanced by the extended finite element method (XFEM). The proposed methodology is applied to the 4D (space-time) investigation of deformation-dependent loading conditions during silo discharge.
Permalink :	http://hdl.handle.net/10993/11147
Commentary :	88594 9788489925786

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