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

被引：6

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.

引用

页数：13

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