首页|旋转水力提升多金属结核运动特性数值模拟

旋转水力提升多金属结核运动特性数值模拟

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采用CFD-DEM耦合方法对多金属结核提升进行模拟,研究了垂直管道中不同旋转流场旋流比对水力提升多金属结核输运特性的影响.结果表明,随着旋转流场旋流比增大,旋转强度显著增强,流体流速最大值增大,颗粒群轴向平均速度增大.旋转流场的旋转强度明显影响管道内颗粒的速度分布:速度大的颗粒逐步分布在管壁周围,速度较小的颗粒分布在管道中心处.旋转流场可降低颗粒群局部浓度,有利于降低因颗粒滞留效应引起局部浓度升高造成的输送管堵塞风险.
Numerical Simulation of Characteristics of Motion for Polymetallic Nodules in Swirling Flow During Hydraulic Lifting
The lifting of polymetallic nodules was simulated by using a CFD-DEM coupling approach,and the influence of different swirling flow on hydraulic lifting of polymetallic nodules in vertical pipelines was explored.The results show that as swirl ratio increases,the intensity of swirl will be enhanced significantly,and both the maximum fluid velocity and the average axial velocity of particle group will increase.It is found that intensity of swirl can bring obvious impact to the distribution of particles with different velocity in the pipe,showing that particles with high velocity are gradually distributed around the pipe wall,while the particles with low velocity in the center of the pipe.Swirling flow can reduce the local concentration of particles,which is beneficial to reducing the risk of pipeline blockage due to higher concentration of particles caused by retention effect.

deep sea miningpolymetallic nodulesliquid-solid two-phase flowhydraulic liftingpipeline transportationswirl ratioCFD-DEM coupling

陈云、杜燕连、李萌、梁栋、沈义俊

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海南大学 南海海洋资源利用国家重点实验室,海南 海口 570228

海南大学 机电工程学院,海南 海口 570228

海南大学 信息与通信工程学院,海南 海口 570228

深海采矿 多金属结核 液固双相流 水力提升 管道输送 旋流比 CFD-DEM耦合

海南省重大科技计划海南省重点研发计划三亚崖州湾深海科技城科研项目

ZDKJ2021027ZDYF2020207SKJC-2020-01-016

2024

10.3969/j.issn.0253-6099.2024.02.004

矿冶工程
长沙矿冶研究院有限责任公司 中国金属学会

矿冶工程

CSTPCD北大核心
影响因子：1.137
ISSN：0253-6099
年,卷(期)：2024.44(2)
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