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Continuum Mechanical Modeling of Dry Granular Systems: From Dilute Flow to Solid-Like Behavior

  • In this thesis, we develop a granular hydrodynamic model which covers the three principal regimes observed in granular systems, i.e. the dilute flow, the dense flow and the solid-like regime. We start from a kinetic model valid at low density and extend its validity to the granular solid-like behavior. Analytical and numerical results show that this model reproduces a lot of complex phenomena like for instance slow viscoplastic motion, critical states and the pressure dip in sand piles. Finally we formulate a 1D version of the full model and develop a numerical method to solve it. We present two numerical examples, a filling simulation and the flow on an inclined plane where the three regimes are included.

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Author:Clément Zemerli
URN (permanent link):urn:nbn:de:hbz:386-kluedo-36968
Advisor:Arnulf Latz
Document Type:Doctoral Thesis
Language of publication:English
Publication Date:2013/01/28
Year of Publication:2014
Publishing Institute:Technische Universität Kaiserslautern
Granting Institute:Technische Universität Kaiserslautern
Acceptance Date of the Thesis:2013/05/07
Date of the Publication (Server):2014/01/29
Number of page:X, 158
Faculties / Organisational entities:Fachbereich Maschinenbau und Verfahrenstechnik
DDC-Cassification:6 Technik, Medizin, angewandte Wissenschaften / 620 Ingenieurwissenschaften und Maschinenbau
Licence (German):Standard gemäß KLUEDO-Leitlinien vom 10.09.2012