Extension of iber for simulating non–newtonian shallow flows: mine-tailings spill propagation modelling
Mine tailings are commonly stored in off-stream reservoirs and are usually composed of water with high concentrations of fine particles (microns). The rupture of a mine-tailings pond pro- motes, depending on the characteristics of the stored material, the fluidization and release of hyper- concentra...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/414913 |
| Acceso en línea: | https://hdl.handle.net/2117/414913 https://dx.doi.org/10.3390/w16142039 |
| Access Level: | acceso abierto |
| Palabra clave: | Non-Newtonian fluids Fluids Hydraulique Numerical modelling Iber Viscous-plastic flows Gypsum tailings Pyroclastic/pyritic tailings Fluids no newtonians Hidràulica Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria de mines Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| Sumario: | Mine tailings are commonly stored in off-stream reservoirs and are usually composed of water with high concentrations of fine particles (microns). The rupture of a mine-tailings pond pro- motes, depending on the characteristics of the stored material, the fluidization and release of hyper- concentrated flows that typically behave as non–Newtonian fluids. The simulation of non–Newto- nian fluid dynamics using numerical modelling tools is based on the solution of mass and momen- tum conservation equations, particularizing the shear stress terms by means of a rheological model that accounts for the properties of the fluid. This document presents the extension of Iber, a two- dimensional hydrodynamic numerical tool, for the simulation of non–Newtonian shallow flows, especially those related to mine tailings. The performance of the numerical tool was tested through- out benchmarks and real study cases. The results agreed with the analytical and theoretical solutions in the benchmark tests; additionally, the numerical tool also revealed itself to be adequate for sim- ulating the dynamic and static phases under real conditions. The outputs of this numerical tool pro- vide valuable information, allowing researchers to assess flood hazard and risk in mine-tailings spill propagation scenarios |
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