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Drift of weakly inertial plastic blocks under wave action of finite-water-depth
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Xi Feng1, 3, 4, Qiyan Liu1, Qingyun Xu2, Xingye Ni1, Weibing Feng1
Haiyang Xuebao | 2024, 46(4) : 1 - 12
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Haiyang Xuebao | 2024, 46(4): 1-12
• Article •
Drift of weakly inertial plastic blocks under wave action of finite-water-depth
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Xi Feng1, 3, 4, Qiyan Liu1, Qingyun Xu2, Xingye Ni1, Weibing Feng1
Affiliations
  • 1. College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
  • 2. China Harbour Engineering Company Ltd., Beijing 100027, China
  • 3. Hainan Geological Bureau Hainan Marine Geological Survey, Haikou 570206, China
  • 4. State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin 300354, China
Published: 2024-04-30 doi: 10.12284/hyxb2024009
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Plastic floating objects have a profound impact on the marine environment. The nearshore process of the floating objects is mainly influenced by the action of waves. On the kinetic characteristics of plastic floating objects, previous studies were not thorough for the nearshore regime. In this paper, laboratory experiments were used to study the drift-law of plastic-floating objects under finite-water-depth waves. The relationship between the horizontal drift velocity of a weakly inertial plastic blocks and their characteristics, along with the wave steepness were discussed. The experimental results show that the drift of plastic blocks is affected by Stokes drift and Euler return flow, which is in good agreement with the second-order Lagrange drift theory. As the floating object’s size is much smaller than the wave length, size or density of the floating objects has no significant effect on drift. The drift of floating objects is proportional to the square of wave steepness. Based on the experiments conducted in this study and previously published experimental data, the empirical formula is revised to provide useful reference for the nearshore migration law of plastic floating objects and so for the relevant prediction.

plastic floating objects  /  finite-water-depth wave  /  second-order Stokes wave  /  Lagrange drift
Xi Feng, Qiyan Liu, Qingyun Xu, Xingye Ni, Weibing Feng. Drift of weakly inertial plastic blocks under wave action of finite-water-depth[J]. Haiyang Xuebao, 2024 , 46 (4) : 1 -12 . DOI: 10.12284/hyxb2024009
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Article Info
doi: 10.12284/hyxb2024009
  • Receive Date：2023-09-02
  • Online Date：2025-11-26
  • Published：2024-04-30
Article Data
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History
  • Received：2023-09-02
  • Revised：2024-01-30
Funding
Affiliations
    1. College of Harbour, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China
    2. China Harbour Engineering Company Ltd., Beijing 100027, China
    3. Hainan Geological Bureau Hainan Marine Geological Survey, Haikou 570206, China
    4. State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation, Tianjin University, Tianjin 300354, China
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Citations
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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