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Numerical prediction of wake field for a four-screw ship
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Xiang LI1, Wei JIA1, Ning LIANG2
Journal of Ship Mechanics | 2024, 28(8) : 1187 - 1199
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Journal of Ship Mechanics | 2024, 28(8): 1187-1199
• Hydrodynamics •
Numerical prediction of wake field for a four-screw ship
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Xiang LI1, Wei JIA1, Ning LIANG2
Affiliations
  • 1.School of Marine Science and Engineering, Hainan University, Haikou 570228, China
  • 2.College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Published: 2024-08-20 doi: 10.3969/j.issn.1007-7294.2024.08.006
Outline
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The complexity of the stern appendage of a four-screw ship and the differences in the spatial layout of the internal and external propellers will lead to the unbalanced load distribution of the internal and external propellers. Based on the CFD method, numerical prediction simulation for the viscous wake field of a ship with four propellers was carried out. According to wake field distribution and turbulence characteristics, the difference in wake fields between the inner and outer propellers was compared and analyzed, and also the results was contrasted with the test values. The study results show that the inner propeller in the turbulence zone is affected by the hull boundary layer, which makes the axial velocity at the inner propeller disk less than that at the outer propeller disk, resulting in uneven load distribution between the inner and outer propellers. The flow at the outer propeller is a mixed one of the hull boundary layer and the turbulent wake, which makes the wake at the outer propeller disk more uneven. The research can provide basis and support for four-screw ship design and stern layout optimization.

four-screw ship  /  wake field  /  boundary layer flow  /  flow field uniformity  /  numerical simulation
Xiang LI, Wei JIA, Ning LIANG. Numerical prediction of wake field for a four-screw ship[J]. Journal of Ship Mechanics, 2024 , 28 (8) : 1187 -1199 . DOI: 10.3969/j.issn.1007-7294.2024.08.006
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Year 2024 volume 28 Issue 8
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Article Info
doi: 10.3969/j.issn.1007-7294.2024.08.006
  • Receive Date：2024-02-03
  • Online Date：2026-03-26
  • Published：2024-08-20
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  • Received：2024-02-03
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Affiliations
    1.School of Marine Science and Engineering, Hainan University, Haikou 570228, China
    2.College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
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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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