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Research on Motion Characteristics of Deep-Sea Polymetallic Nodules in Vertical Pipeline of Airlift System by Numerical Simulation
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Hai LIN1, 2, Yanlian DU1, 3, Mengdi FU1, 2, Mengran WEI1, 3, Jingyu ZHU1, 2, Yijun SHEN1, 3
Mining and Metallurgical Engineering | 2026, 46(1) : 1 - 6
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Mining and Metallurgical Engineering | 2026, 46(1): 1-6
• MINING •
Research on Motion Characteristics of Deep-Sea Polymetallic Nodules in Vertical Pipeline of Airlift System by Numerical Simulation
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Hai LIN1, 2, Yanlian DU1, 3, Mengdi FU1, 2, Mengran WEI1, 3, Jingyu ZHU1, 2, Yijun SHEN1, 3
Affiliations
  • 1.State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, Hainan, China
  • 2.School of Mechanical and Electrical Engineering, Hainan University, Haikou 570228, Hainan, China
  • 3.School of Marine Science and Engineering, Hainan University, Haikou 570228, Hainan, China
doi: 10.3969/j.issn.0253-6099.2026.01.001
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To investigate the motion characteristics of deep-sea polymetallic nodules in a vertical pipeline of airlift system with air at different flow rates and also study flow field characteristics of gas-liquid-solid three-phase flow in the system, numerical simulation was made with CFD-DEM coupling method for the three-phase flow in the vertical pipeline of airlift system. The results show that as air flow rate increases, the average local volume fraction of particle swarm decreases, and the frequency of occurrence is lower first and then become higher for slug flow. Both the flow rate of fluid and the average axial velocity of particle swarm in pipeline increase. The pressure drop in the pipeline increases with the local volume fraction of particle swarm, and average pressure drop decreases with the increase of air flow rate. Therefore, based on the variation in local volume fraction of particles in pipeline reflected by the pressure drop, the slug flow can be identified so as to prevent pipeline blockage.

deep-sea mining  /  polymetallic nodules  /  airlift  /  pipeline transportation  /  motion characteristics  /  flow field characteristics  /  three-phase flow  /  fluid mechanics
林海, 杜燕连, 符孟帝, 魏孟然, 朱井育, 沈义俊. 深海多金属结核在垂直管道气力提升系统中的运动特性模拟. 矿冶工程杂志, 2026 , 46 (1) : 1 -6 . DOI: 10.3969/j.issn.0253-6099.2026.01.001
Hai LIN, Yanlian DU, Mengdi FU, Mengran WEI, Jingyu ZHU, Yijun SHEN. Research on Motion Characteristics of Deep-Sea Polymetallic Nodules in Vertical Pipeline of Airlift System by Numerical Simulation[J]. Mining and Metallurgical Engineering, 2026 , 46 (1) : 1 -6 . DOI: 10.3969/j.issn.0253-6099.2026.01.001
Appendix
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Year 2026 volume 46 Issue 1
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Article Info
doi: 10.3969/j.issn.0253-6099.2026.01.001
  • Receive Date：2025-09-15
  • Online Date：2026-10-08
Article Data
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  • Received：2025-09-15
Funding
Affiliations
    1.State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, Hainan, China
    2.School of Mechanical and Electrical Engineering, Hainan University, Haikou 570228, Hainan, China
    3.School of Marine Science and Engineering, Hainan University, Haikou 570228, Hainan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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