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Analysis method for high-concentration mineral particle flow in long-distance curved pipes
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Lin-na CHEN1, Yu-miao WANG1, Zhong-wei ZHOU1, 2, Ri ZHANG1
Journal of Ship Mechanics | 2026, 30(5) : 739 - 751
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Journal of Ship Mechanics | 2026, 30(5): 739-751
• Hydrodynamics •
Analysis method for high-concentration mineral particle flow in long-distance curved pipes
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Lin-na CHEN1, Yu-miao WANG1, Zhong-wei ZHOU1, 2, Ri ZHANG1
Affiliations
  • 1.College of Engineering, Ocean University of China, Qingdao 266400, China
  • 2.National Engineering Research Center of Dredging Technology and Equipment, Shanghai 201314, China
Published: 2026-05-15 doi: 10.3969/j.issn.1007-7294.2026.05.007
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The flexible hose connecting the deep-sea mining vehicle and the relay station is a key link in the deep-sea mining system and is suspended in a curved configuration above the mining vehicle. This paper extends the applicable conditions of the model from the vertical pipeline to the flexible hose based on the one-dimensional model (VHT_1D), by discretizing the long-distance curved pipelines into a series of inclined pipelines for force analysis. The extended model is fully compared with the key parameters calculated by the two-way coupling method of fluid dynamics and discrete elements (CFD-DEM), and this model shows high accuracy. At the same time, the influence of input parameters such as feed concentration and mixture transport velocity on the flow state in the pipeline is further explored. A reasonable range of input parameters is determined, and the conveying efficiency of the pipeline system is optimized. In addition, the hydraulic gradients in the single-peak and double-peak long-distance curved pipes are compared and analyzed, providing a basis for the design of the conveying pump. The extended model significantly improves computational efficiency while maintaining high accuracy, particularly for long-distance pipeline applications.

hydraulic lifting of mineral particles  /  particle flow  /  two-fluid method  /  curved pipes  /  flexible hose
Lin-na CHEN, Yu-miao WANG, Zhong-wei ZHOU, Ri ZHANG. Analysis method for high-concentration mineral particle flow in long-distance curved pipes[J]. Journal of Ship Mechanics, 2026 , 30 (5) : 739 -751 . DOI: 10.3969/j.issn.1007-7294.2026.05.007
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doi: 10.3969/j.issn.1007-7294.2026.05.007
  • Receive Date：2025-09-15
  • Online Date：2026-07-07
  • Published：2026-05-15
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  • Received：2025-09-15
Affiliations
    1.College of Engineering, Ocean University of China, Qingdao 266400, China
    2.National Engineering Research Center of Dredging Technology and Equipment, Shanghai 201314, 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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