Numerical investigation of scour by incompressible SPH coupled with coarse-grained DEM

Kim, Jihwan; Lee, Jihyeong; Jang, Hoyoung; Byun, Jeyun; Joo, Young Seok

doi:10.1016/j.soildyn.2021.106998

Cited by 11 publications

(1 citation statement)

References 29 publications

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“…The simulation of Wenjia gully debris flow was conducted and the destruction of the structures was estimated. Kim et al (2021) coupled ISPH and Coarse-Grained DEM (CGDEM) to investigate the scouring behaviors. Compared with original DEM, the computational cost of CGDEM was very small.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulations of Liquid-Solid Flows in A Vertical Pipe by MPS-DEM Coupling Method

2022

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In the process of deep-sea mining, the liquid-solid flows in the vertical transportation pipeline are very complex. In the present work, an in-house solver MPSDEM-SJTU based on the improved MPS and DEM is developed for the simulation of hydraulic conveying. Firstly, three examples including the multilayer cylinder collapse, the Poiseuille flow and two-phase dam-break are used to validate the precision of the DEM model, the pipe flow model and MPS-DEM coupling model, respectively. Then, the hydraulic conveying with coarse particles in a vertical pipe is simulated. The solid particle distribution is presented and investigated in detail. Finally, the coupling method is successfully applied for the simulation of the liquid-solid flows in a vertical pipe with rotating blades, which shows the stability of the solver under rotating boundary conditions. This fully Lagrangian model is expected to be a new approach for analyzing hydraulic conveying.

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Section: Introductionmentioning

confidence: 99%