Research on the Characteristics of Solid–Liquid Two-Phase Flow in the Lifting Pipeline of Seabed Mining

Author:

Su Tianyu123,Chen Shengtao123,Yuan Hanhan123

Affiliation:

1. College of Naval Architecture and Ocean Engineering, Dalian Maritime University, Dalian 116026, China

2. Liaoning Provincial Key Laboratory of Rescue and Salvage Engineering, Dalian Maritime University, Dalian 116026, China

3. International Joint Research Centre for Subsea Engineering Technology and Equipment, Dalian Maritime University, Dalian 116026, China

Abstract

Vertical pipes are a significant component of deep-sea mining hydraulic lifting systems, frequently stretching up to thousands of meters. This article employs the coupling approach of computational fluid dynamics for the liquid phase and the Discrete Element Method for the particle phase (CFD-DEM) to simulate solid–liquid two-phase flow in a vertical pipeline, utilizing a scaled vertical lift pipeline model as the study object. By adjusting the conveying parameters and structural factors, the lifting performance of particles and the two-phase flow characteristics under various operating circumstances are examined, and the veracity of the simulation is validated by experimental techniques. The findings reveal that the lifting of particles is impacted by both the conveying parameters and the structural factors. The increase in flow rate can effectively improve the distribution of particles in the pipeline and enhance the followability of particles. The disturbance created by the collision and mixing of particles induced by the change in particle concentration has a tremendous impact on the velocity distribution of the two-phase flow in the pipeline and the pressure distribution of the pipe wall. In addition, there is an ideal lifting flow corresponding to various particle concentrations, which may improve the particle dispersion. The outcome of this research has a certain reference relevance for the selection of the parameters of deep-sea mining lifting systems in the future.

Funder

Fundamental Research Funds for the Central Universities

Publisher

MDPI AG

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3