| Autor: |
Lin, Yuan, Weng, Zixin, Guo, Jin, Lin, Xingshuang, Phan-Thien, Nhan, Zhang, Jian |
| Předmět: |
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| Zdroj: |
Journal of Marine Science & Engineering; Jan2023, Vol. 11 Issue 1, p10, 13p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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