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

Wang, Chun ; Ye, Guanlin ; Meng, Xiannan ; Wang, Yongqi ; Peng, Chong (2023)
A Eulerian−Lagrangian Coupled Method for the Simulation of Submerged Granular Column Collapse.
In: Journal of Marine Science and Engineering, 2021, 9 (6)
doi: 10.26083/tuprints-00019568
Article, Secondary publication, Publisher's Version

Copyright Information: CC BY 4.0 International - Creative Commons, Attribution.

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Item Type: Article
Type of entry: Secondary publication
Title: A Eulerian−Lagrangian Coupled Method for the Simulation of Submerged Granular Column Collapse
Language: English
Date: 14 November 2023
Place of Publication: Darmstadt
Year of primary publication: 2021
Place of primary publication: Basel
Publisher: MDPI
Journal or Publication Title: Journal of Marine Science and Engineering
Volume of the journal: 9
Issue Number: 6
Collation: 20 Seiten
DOI: 10.26083/tuprints-00019568
Corresponding Links:
Origin: Secondary publication DeepGreen

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.

Uncontrolled Keywords: granular column collapse, water–grain mixture flow, Eulerian–Lagrangian coupled method
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-195686
Additional Information:

This article belongs to the Special Issue Novel Numerical Methods for Complicated and Violent Flows

Classification DDC: 600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
600 Technology, medicine, applied sciences > 624 Civil engineering and environmental protection engineering
Divisions: 16 Department of Mechanical Engineering > Fluid Dynamics (fdy)
Date Deposited: 14 Nov 2023 13:46
Last Modified: 20 Nov 2023 10:12
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19568
PPN: 51327653X
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