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Flow State of Y-shaped Pipe at Bottom of Buffer Station in Deep-Sea Mining
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Zhuo WU1, Hao ZHENG1, Chengcai JI1, Yingjie GUAN2, Zhou LI1
Mining and Metallurgical Engineering | 2023, 43(1) : 1 - 5
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Mining and Metallurgical Engineering | 2023, 43(1): 1-5
• MINING •
Flow State of Y-shaped Pipe at Bottom of Buffer Station in Deep-Sea Mining
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Zhuo WU1, Hao ZHENG1, Chengcai JI1, Yingjie GUAN2, Zhou LI1
Affiliations
  • 1.State Key Laboratory of Exploitation and Utilization of Deep-sea Mineral Resources, Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China
  • 2.College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, Hunan, China
Published: 2023-02-01 doi: 10.3969/j.issn.0253-6099.2023.01.001
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Aiming at complicated flow field of Y-shaped pipe in pump piping system and risk of ore leakage in conveying test for deep sea mining, numerical simulation was performed by using CFD-DEM method for ore particles with different velocities, different volume concentration and different particle sizes. Based on that, the movement features of particle groups and flow field distribution pattern in Y-shaped pipe were all analyzed. It is found that the flow field distribution in Y-shaped pipe is influenced by the curvature of pipe elbow and the flow distribution in the inlet of Y-shaped pipe. The particle groups flow against the inner wall of elbow, and deflect upward under the influence of upward flow. If upward flow with lower velocity, particles with large grain size and high volume concentration will hit the bottom of pipe, leading to some losses. As the upward velocity decreases and both particle volume concentration and grain size increase, more and more particles will be continuously lost on the bottom of pipe. Due to the existence of particle flow, both intensity and scale of the low-pressure vortex region in Y-shaped pipe become weaken.

deep-sea mining  /  pipeline conveying  /  CFD-DEM  /  Y-shaped pipe  /  particle flow  /  numerical simulation
Zhuo WU, Hao ZHENG, Chengcai JI, Yingjie GUAN, Zhou LI. Flow State of Y-shaped Pipe at Bottom of Buffer Station in Deep-Sea Mining[J]. Mining and Metallurgical Engineering, 2023 , 43 (1) : 1 -5 . DOI: 10.3969/j.issn.0253-6099.2023.01.001
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.01.001
  • Receive Date：2022-08-23
  • Online Date：2026-03-05
  • Published：2023-02-01
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  • Received：2022-08-23
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Affiliations
    1.State Key Laboratory of Exploitation and Utilization of Deep-sea Mineral Resources, Changsha Research Institute of Mining and Metallurgy Co Ltd, Changsha 410012, Hunan, China
    2.College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, Hunan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2023.01.001
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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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