Numerical simulations of comminution slurries over complex topographies: Putting together CFD and pipeline integrity |
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| Affiliation: | 1. Master Program on Water Resources and Environment, Department of Civil Engineering, Universidad de Chile, Blanco Encalada 2002 3rd Floor, Santiago, Chile;2. Department of Mining Engineering, Universidad de Chile, Tupper 2069, 8370451 Santiago, Chile;3. Advanced Mining Technology Center, Universidad de Chile, Tupper 2007 3rd Floor, 8370451 Santiago, Chile;4. Department of Civil Engineering, Universidad de Chile, Blanco Encalada 2002 3rd Floor, 8370449 Santiago, Chile;1. Chemical Engineering & Process Development Division, CSIR-National Chemical Laboratory, Pune, 411008, India;2. Centre for Nanotechnology, Central University of Jharkhand, Brambe, Ranchi, 835205, India;1. Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran;2. Department of Mechanical Engineering, Babol Noushirvani University of Technology, Babol, Iran;1. Rio Tinto Centre for Advanced Mineral Recovery, Department of Earth Science and Engineering, Imperial College London, United Kingdom;2. Applied Modelling and Computation Group, Department of Earth Science and Engineering, Imperial College London, United Kingdom;1. Key Laboratory of Aerosol Chemistry & Physics (KLACP), Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China;2. State Key Laboratory of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China;3. Shaanxi Key Laboratory of Atmospheric and Haze-fog Pollution Prevention, Institute of Earth Environment, Chinese Academy of Sciences, China;4. University of Chinese Academy of Sciences, Beijing, China;5. Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, 89512, United States;6. Hong Kong Premium Services and Research Company, Lai Chi Kok, Kowloon, Hong Kong;1. Division of Mechanics of Solid Materials, Luleå University of Technology, SE-97187 Luleå, Sweden;2. Minerals and Metals Research Laboratory, Luleå University of Technology, SE-97187 Luleå, Sweden |
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| Abstract: | The use of computational fluid dynamics gives new and interesting insights for risk analysis of cross-country ore hydraulic transport operations. In particular, they offer the possibility to predict, with reasonable accuracy, the progression and final condition of spills driven by pipeline leaks at selected locations, at a relatively modest computational cost. In this work, a depth-averaged, two-dimensional numerical model is used to simulate an ore concentrate pipeline rupture and subsequent spill, reproduced as a constant flow condition at the leak point. Although the model is well suited to solve the governing flow equations on arbitrary topographies by means of digital elevation models, two specific locations featuring relatively mild and steep slopes, are analysed with regard to their implications on the potential requirements for emergency team response. Results, obtained using different slurry rheologies, are compared with those obtained using a simpler, common flow resistance model derived for water flowing over rough surfaces. |
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| Keywords: | Computational fluid dynamics Environmental Simulations |
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