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Hydrodynamics of submerged waterjet propulsion
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Heng ZHANG1, Guo-rui JI1, 2, Ji-tao QIU1, 2, You-lin CAI1, 2
Journal of Ship Mechanics | 2025, 29(1) : 53 - 62
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Journal of Ship Mechanics | 2025, 29(1): 53-62
• Hydrodynamics •
Hydrodynamics of submerged waterjet propulsion
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Heng ZHANG1, Guo-rui JI1, 2, Ji-tao QIU1, 2, You-lin CAI1, 2
Affiliations
  • 1.Marine Design & Research Institute of China, Shanghai 201100, China
  • 2.Key Laboratory of Waterjet Propulsion Technology, Shanghai 200011, China
Published: 2025-01-20 doi: 10.3969/j.issn.1007-7294.2025.01.006
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Submerged waterjet propulsion is a variant of conventional waterjet propulsion, whose inlet duct is fully integrated into the bottom plate of hull, reulting in a more complex coupled flow field behind. In order to meet the development requirements of submerged waterjet propulsion, the differences in mechanical control system between two types of waterjet propulsion were studied. Numerical simulations were conducted for both conventional and submerged waterjet propulsion at designed speed point. The comparison results show that submerged waterjet propulsion has larger flow obtaining area, higher inlet duct efficiency and less impact on the ship motion while the thrust reduction fraction is larger.

submerged waterjet propulsion  /  thrust deduction  /  inlet duct  /  CFD
Heng ZHANG, Guo-rui JI, Ji-tao QIU, You-lin CAI. Hydrodynamics of submerged waterjet propulsion[J]. Journal of Ship Mechanics, 2025 , 29 (1) : 53 -62 . DOI: 10.3969/j.issn.1007-7294.2025.01.006
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Article Info
doi: 10.3969/j.issn.1007-7294.2025.01.006
  • Receive Date：2024-07-16
  • Online Date：2026-03-24
  • Published：2025-01-20
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  • Received：2024-07-16
Funding
Affiliations
    1.Marine Design & Research Institute of China, Shanghai 201100, China
    2.Key Laboratory of Waterjet Propulsion Technology, Shanghai 200011, China
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表12种不同金属材料的力学参数
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Number of
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Number of
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Percentage of
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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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