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A Model for Trap Door Flow from a Deep Container

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Desiderata Geotechnica

Part of the book series: Springer Series in Geomechanics and Geoengineering ((SSGG))

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Computational simulations of trap door flow in cohesive frictional, materials are presented. We focus on flows where the extraction volume is generated by dilatancy. The dilatancy is caused by micro-cracking associated with the loss of cohesion at the onset of flow and/or the transition of the granulate into a more mobile, more loose packing order. The material behavior is modelled as a non-Newtonian fluid including rigid plastic behavior as a limit case. A rate dependent cohesion term considers the fluid like behavior if collisions dominate the intergranular momentum transfer. The simulations are based on an implicit particle-in-cell finite element code [1] developed by the second author. The implementation of the model equations is benchmarked against an analytical solution for gravity driven flow in an infinite chute.

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Correspondence to H.-B. Muhlhaus .

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Muhlhaus, HB., Moresi, L.N. (2019). A Model for Trap Door Flow from a Deep Container. In: Wu, W. (eds) Desiderata Geotechnica. Springer Series in Geomechanics and Geoengineering. Springer, Cham.

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-14986-4

  • Online ISBN: 978-3-030-14987-1

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