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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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Abstract

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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References

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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. https://doi.org/10.1007/978-3-030-14987-1_13

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  • DOI: https://doi.org/10.1007/978-3-030-14987-1_13

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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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