Reference : XFEM coupling of granular flows interacting with surrounding fluids

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a journal
	Discipline(s) :	Engineering, computing & technology : Multidisciplinary, general & others
	Focus Areas :	Computational Sciences
	To cite this reference:	http://hdl.handle.net/10993/11140

Title :	XFEM coupling of granular flows interacting with surrounding fluids
Language :	English
Author, co-author :	Pasenow, F. [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 :	2012
Journal title :	ECCOMAS 2012 - European Congress on Computational Methods in Applied Sciences and Engineering, e-Book Full Papers
Pages :	4248-4266
Peer reviewed :	Yes
Event name :	6th European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2012
Event date :	10 September 2012 through 14 September 2012
Event place (city) :	Vienna
Keywords :	[en] Fluid-structure-interaction ; Granular material ; Interface conditions ; Sharp interface ; XFEM ; Discontinuous solutions ; Extended finite element method ; Granular flows ; Heaviside functions ; Incompressible fluid ; Interface dynamic ; Level Set method ; Model equations ; Newtonians ; Space-time finite element method ; Stress tensors ; Weighted decomposition ; Computational methods ; Electronic publishing ; Hydrogels ; Incompressible flow ; Granular materials
Abstract :	[en] In this paper, ideas for the simulation of sliding dry granular materials interacting with surrounding fluids are presented and first results are presented. The compressible granular material is modeled as a medium which can show solid-like and fluid-like characteristics. Therefore a weighted decomposition of stress tensors of a solid-like and a fluid-like phase is applied. The surrounding incompressible fluids are described with a Newtonian constitutive model. Interface dynamics are handled with the level-set method. The model equations are discretized with the space-time finite element method. Discontinuous solution characteristics across interfaces are captured numerically by the extended finite element method (XFEM). For all discontinuities the space of ansatz functions is enriched with Heaviside functions.
Permalink :	http://hdl.handle.net/10993/11140
Commentary :	94629 9783950353709

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