摘要：Deep-sea mining presents a potential solution to meet the growing demand for mineral resources, but significant challenges remain in ensuring the efficient and stable transport of minerals from the seabed to the surface. This paper integrates large-eddy-simulation computational fluid dynamics with the discrete-element method (LES CFD-DEM) to resolve, at particle scale, the coupled fluid dynamics and contact mechanics governing solid-liquid transport in a vibrating 20 m pipeline representative of deep-sea operations. Systematic parametric sweeps spanning feed concentration (10.5-15 %), mixture velocity (3.4-4.0 m/s) and forced-vibration frequency (0-1 Hz) reveal three reproducible transport regimes that collapse onto a single dimensionless ratio-the TransportCoupling Critical Index, TCCI. Fluid-dominated flow prevails for TCCI 5. Operating at 10-12 % solids, 0.8-1 Hz vibration and ＞= 3.6 m/s confines the system to the optimal coupled regime (TCCI approximate to 1-3), minimizing pressure loss while maintaining a safe margin to clogging. A continuum clogging-breakdown model, derived from force balance and validated against simulation and literature data, quantitatively predicts local particle volume fractions within +/- 15 %. These findings provide design rules-and a predictive framework-for next-generation deep-sea mining risers.

关键字：Deep-sea mining; Solid-liquid two-phase flow; Ocean current-induced vibrations; Particle transport

ISSN号：0009-2509

卷、期、页：卷: 321子辑: B

发表日期：2026-02-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,SCIE（科学引文索引网络版）

发表期刊名称：CHEMICAL ENGINEERING SCIENCE

参与作者：银波

通讯作者：程卓

第一作者：王科,王莹莹

论文类型：期刊论文

论文概要：程卓,王科,银波,王莹莹，Particle transport mechanisms in an Ocean-Disturbed curved lift pipeline for Deep-Sea mining，CHEMICAL ENGINEERING SCIENCE，2026，卷: 321子辑: B

论文题目：Particle transport mechanisms in an Ocean-Disturbed curved lift pipeline for Deep-Sea mining