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Numerical modelling of fluid-induced soil erosion in granular filters using a coupled bonded particle lattice Boltzmann method |
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| Institution: | 1. Zienkiewicz Centre for Computational Engineering, College of Engineering, Swansea University, SA1 8EP, UK;2. School of Engineering and ICT, University of Tasmania, Hobart 7001, Australia;3. School of Civil Engineering, University of Birmingham, B15 2TT, UK;1. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu 210096, China;2. Southeast University-Monash University Joint Graduate School, Suzhou, Jiangsu 215123, China;3. Department of Chemical Engineering, Monash University, Melbourne 3800, Australia;4. School of Mechanical Engineering, Xiangtan University, Hunan 411105, China;1. Graduate School of Agriculture, Kyoto University, Oiwake-cho, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan;2. Institute of Industrial Science, The University of Tokyo, Bw304, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan |
| Abstract: | This paper presents a three-dimensional coupled bonded particle and lattice Boltzmann method (BPLBM) with an immersed moving boundary scheme for the fluid-solid interaction. It is then applied to investigate the erosion process of soil particles in granular filters placed within earth dams. The microscopic migration of soil particles can be clearly visualised as the movement of particles can be directly recorded. Three granular filters with different representative size ratios are simulated and the numerical results are seen to match the empirical criteria. In addition, the effect of the representative size ratio of granular filters, hydraulic loading and erosion time are discussed. |
| Keywords: | Internal erosion Bonded particle method Lattice Boltzmann method Granular filter Immersed moving boundary Fluid-solid coupling |
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