Numerical modelling of fluid-induced soil erosion in granular filters using a coupled bonded particle lattice Boltzmann method

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• 作者：Min Wang^a ; ^{sacewangmin@gmail.com} ; Y.T. Feng^a ; G.N. Pande^a ; A.H.C. Chan^b ; W.X. Zuo^c
• 关键词：Internal erosion ; Bonded particle method ; Lattice Boltzmann method ; Granular filter ; Immersed moving boundary ; Fluid-solid coupling
• 刊名：Computers and Geotechnics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：82
• 期：Complete
• 页码：134-143
• 全文大小：3250 K
• 卷排序：82

文摘

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.