- Title
- Numerical simulation of localised fluidisation due to a leaking pipe C3 - Geomechanics from Micro to Macro - Proceedings of the TC105 ISSMGE International Symposium on Geomechanics from Micro to Macro, IS-Cambridge 2014
- Creator
- Li, Jing; Cui, Xilin; Chan, Andrew; Kong, Lingwei; Zhang, X. W.
- Date
- 2014
- Type
- Text; Conference proceedings
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/72242
- Identifier
- vital:6875
- Abstract
- This paper presents a numerical simulation of localised fluidisation in a granular soil due to a leaking pipe using the technique coupling the discrete element method with the lattice Boltzmann method. Simulation results show four distinctive bed regimes at various flow rates (i.e. fixed-bed, stable-cavity, growing-cavity, and blow-out regimes, respectively). The bed regimes are found to be consistent with previous experimental results. The primary characterisation prior to and at the onset of fluidisation, the bed expansion, and the cavity evolution, are also studied and compared with the existing experimental findings, good agreements have been achieved. The present work suggests the coupled technique has an excellent capability in capturing the behaviour of leakage-soil interaction, and could be a very promising tool for the investigations of geotechnical applications on a particle level. © 2015 Taylor & Francis Group.
- Publisher
- Taylor and Francis - Balkema
- Rights
- This metadata is freely available under a CCO license
- Subject
- Computational fluid dynamics; Fluidization; Geomechanics; Numerical models; A-particles; Bed expansion; Coupled techniques; Fixed-bed; Geotechnical application; Granular soils; Lattice Boltzmann method; Leaking pipes; Computer simulation
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