Simulation Study on the Sediment Dispersion during Deep-Sea Nodule Harvesting

被引：4
作者：
Lin, Yuan [1 ,2 ,3 ]
Weng, Zixin [1 ]
Guo, Jin [1 ]
Lin, Xingshuang [1 ,3 ]
Phan-Thien, Nhan [4 ]
Zhang, Jian [5 ]
机构：
[1] Zhejiang Univ, Ocean Coll, Inst Ocean Engn & Technol, Zhoushan 316021, Peoples R China
[2] Minist Educ, Engn Res Ctr Ocean Sensing Technol & Equipment, Zhoushan 316021, Peoples R China
[3] Zhejiang Univ, Hainan Inst, Sanya 572025, Peoples R China
[4] Zhejiang Univ, Dept Engn Mech, Hangzhou 310027, Peoples R China
[5] Zhejiang Univ, Coll Elect Engn, Hangzhou 310027, Peoples R China
来源：
JOURNAL OF MARINE SCIENCE AND ENGINEERING | 2023年 / 11卷 / 01期
基金：
海南省自然科学基金; 中国国家自然科学基金;
关键词：
sediment plume; collector plume; deep-sea mining; MODEL;
D O I：
10.3390/jmse11010010
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
During the harvesting of polymetallic nodules on the seabed, the sediment plume due to disturbance on the seabed impacts the benthic ecosystem. A numerical simulation based on the SPH (smooth particle hydrodynamics) method is used to estimate the time and length scale of the plume impact near the seabed during a small-scale harvesting process. The simulation result considerably agrees with the one from the lab-scale water-channel experiment. It is found that, in the sediment plume, the traced sub-plume with iso-surface of lower sediment concentration travels a longer distance, and spends a longer time to achieve the stable state. Moreover, with the increase of the releasing rate of the disturbed sediment, the sub-plume spreads over greater distance, which also needs more time to achieve the stable state.
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收藏
页数：13
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