Numerical simulation of coarse particle-liquid two-phase flow in deep-sea mining vertical pipes

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL Powder Technology Pub Date : 2025-02-10 DOI:10.1016/j.powtec.2025.120769

Jianing Li , Nian-Zhong Chen

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引用次数: 0

Abstract

A Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) based model is developed to simulate the coarse particle-liquid two-phase flow in a deep-sea mining vertical pipe. In this model, the traditional Eulerian–Lagrangian method in a Discrete Particle Method FOAM (DPMFoam) solver is modified by introducing a Virtual Mass Distribution Function (VMDF) to solve the governing equations for coarse particles and fluid phases, in which a collision model is also introduced to take into account the collision effects of particles with walls, and particles with particles. The numerical accuracy of the developed CFD-DEM model is validated by the comparison with the experimental results. The flow field patterns of the coarse particle-liquid two-phase flow are then analyzed and a sensitivity analysis is conducted to investigate the effects of variation of transport parameters on the local concentration of coarse particles and the velocity distribution characteristics of coarse particles and fluid. The results show that the local concentration of particles is increased with the increase of the diameter and volume concentration of particle, and it is decreased with the increase of transport velocity. For high particle volume concentration, large particle diameter or low transport velocity, the “retention effect” is easily triggered, leading to blockage within the vertical pipe.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.