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Drag reduction study on the biomimetic adaptive deformation of the wall surface of underwater vehicles
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Jun TANGa, b, Jia-yong LIa, Xin-miao SUNa
Journal of Ship Mechanics | 2024, 28(9) : 1328 - 1338
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Journal of Ship Mechanics | 2024, 28(9): 1328-1338
Hydrodynamics
Drag reduction study on the biomimetic adaptive deformation of the wall surface of underwater vehicles
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Jun TANGa, b, Jia-yong LIa, Xin-miao SUNa
Affiliations
  • a.School of Civil Engineering and Architecture, Tianjin University, Tianjin 300354, China
  • b.Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300354, China
Published: 2024-09-20 doi: 10.3969/j.issn.1007-7294.2024.09.004
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Dolphins and other toothed cetaceans have high-speed swimming ability and are important research objects for underwater biomimetic drag reduction. In this paper, based on the characteristics of dolphin skin structure and adaptive deformation, an engineering-scale bionic study was carried out, a wall deformation motion control equation with the normal velocity of the boundary layer of the wall surface as the input signal was designed, and the drag reduction performance of the deformed wall surface was simulated by the dynamic mesh technology. The results show that the optimal frictional resistance reduction rate of the deformed wall surface is 19.24% and the optimal total resistance reduction rate is 6.4% at a flow rate of 0.5 to 10 m/s. Application of the biomimetic control results in the increase of the thickness of the turbulent boundary layer of the wall surface, reduction of both the surface friction resistance and the turbulence kinetic energy of the flow field. The bionic deformation wall was applied to the surface of the non-attached SUBOFF submarine model to carry out drag reduction design. In the speed range of 3.045-8.231 m/s, the total drag reduction rate greater than 8.0% was obtained.

dolphin skin  /  bionics  /  deformed wall surface  /  drag reduction
Jun TANG, Jia-yong LI, Xin-miao SUN. Drag reduction study on the biomimetic adaptive deformation of the wall surface of underwater vehicles[J]. Journal of Ship Mechanics, 2024 , 28 (9) : 1328 -1338 . DOI: 10.3969/j.issn.1007-7294.2024.09.004
Year 2024 volume 28 Issue 9
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doi: 10.3969/j.issn.1007-7294.2024.09.004
  • Receive Date:2024-03-19
  • Online Date:2026-03-26
  • Published:2024-09-20
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  • Received:2024-03-19
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    a.School of Civil Engineering and Architecture, Tianjin University, Tianjin 300354, China
    b.Tianjin Key Laboratory of Port and Ocean Engineering, Tianjin University, Tianjin 300354, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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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