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Article

A Eulerian–Lagrangian Coupled Method for the Simulation of Submerged Granular Column Collapse

1
School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
2
School of Mathematics and Manchester Centre for Nonlinear Dynamics, The University of Manchester, Manchester M13 9PL, UK
3
Chair of Fluid Dynamics, Department of Mechanical Engineering, Technische Universität Darmstadt, Otto-Berndt-Str. 2, 64287 Darmstadt, Germany
4
Institut fuer Geotechnik, Universitaet fuer Bodenkultur, Feistmantelstrasse 4, 1180 Vienna, Austria
*
Author to whom correspondence should be addressed.
Academic Editor: Emilio F. Campana
J. Mar. Sci. Eng. 2021, 9(6), 617; https://doi.org/10.3390/jmse9060617
Received: 30 April 2021 / Revised: 24 May 2021 / Accepted: 29 May 2021 / Published: 3 June 2021
(This article belongs to the Special Issue Novel Numerical Methods for Complicated and Violent Flows)
A two-fluid Eulerian–Lagrangian coupled model is developed to investigate the complex interactions between solid particles and the ambient water during the process of submerged granular column collapse. In this model, the water phase is considered to be a Newtonian fluid, whereas the granular column is modeled as an elastic–perfectly plastic material. The water flow field is calculated by the mesh-based Eulerian Finite Volume Method (FVM), with the free surface captured by the Volume-of-Fluid (VOF) technique. The large deformation of the granular material is simulated by the mesh-free, particle-based Lagrangian Smoothed Particle Hydrodynamics method (SPH). Information transfer between Eulerian nodes and Lagrangian particles is performed by the aid of the SPH interpolation function. Both dry and submerged granular column collapses are simulated with the proposed model. Experiments of the submerged cases are also conducted for comparison. Effects of dilatancy (compaction) of initially dense (loose) packing granular columns on the mixture dynamics are investigated to reveal the mechanisms of different flow regimes. Pore water pressure field and granular velocity field are in good agreement between our numerical results and experimental observations, which demonstrates the capability of the proposed Eulerian–Lagrangian coupled method in dealing with complex submerged water–granular mixture flows. View Full-Text
Keywords: granular column collapse; water–grain mixture flow; Eulerian–Lagrangian coupled method granular column collapse; water–grain mixture flow; Eulerian–Lagrangian coupled method
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MDPI and ACS Style

Wang, C.; Ye, G.; Meng, X.; Wang, Y.; Peng, C. A Eulerian–Lagrangian Coupled Method for the Simulation of Submerged Granular Column Collapse. J. Mar. Sci. Eng. 2021, 9, 617. https://doi.org/10.3390/jmse9060617

AMA Style

Wang C, Ye G, Meng X, Wang Y, Peng C. A Eulerian–Lagrangian Coupled Method for the Simulation of Submerged Granular Column Collapse. Journal of Marine Science and Engineering. 2021; 9(6):617. https://doi.org/10.3390/jmse9060617

Chicago/Turabian Style

Wang, Chun, Guanlin Ye, Xiannan Meng, Yongqi Wang, and Chong Peng. 2021. "A Eulerian–Lagrangian Coupled Method for the Simulation of Submerged Granular Column Collapse" Journal of Marine Science and Engineering 9, no. 6: 617. https://doi.org/10.3390/jmse9060617

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