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Hydrodynamic load characteristics of a pre-propeller energy-saving duct under steering state
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Peng-yao YU1, Xin-yu HU1, Qiang QIN1, Bing-bing HAN1, Shi-jian CAI2, Hao-song ZHANG1
Journal of Ship Mechanics | 2026, 30(9) : 1473 - 1482
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Journal of Ship Mechanics | 2026, 30(9): 1473-1482
• Hydrodynamics •
Hydrodynamic load characteristics of a pre-propeller energy-saving duct under steering state
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Peng-yao YU1, Xin-yu HU1, Qiang QIN1, Bing-bing HAN1, Shi-jian CAI2, Hao-song ZHANG1
Affiliations
  • 1College of Naval Architecture and Ocean Engineering, Dalian Maritime University, Dalian 116026, China
  • 2Shanghai Key Laboratory of Ship Engineering, Shanghai 200011, China
Published: 2026-09-15 doi: 10.3969/j.issn.1007-7294.2026.09.007
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Energy-saving ducts ahead of the propeller are widely applied to merchant ships as highly efficient energy-saving devices. Taking a certain bulk carrier as the research object, this paper adopts CFD technology to establish a numerical analysis method for the hydrodynamic loads of the energy-saving duct ahead of the propeller under ship steering conditions, and verifies the accuracy of the proposed method through convergence analysis and comparison with relevant experimental data. Based on this method, the influence laws of key factors including displacement volume, ship speed, rudder angle and rudder speed on the hydrodynamic loads of the energy-saving duct ahead of the propeller are investigated. The results show that the larger the ship's displacement volume, the greater the hydrodynamic loads acting on the energy-saving duct ahead of the propeller in all directions; the increases in ship speed and rudder angle both lead to an increase in the hydrodynamic loads on the duct in all directions; rudder speed has almost no effect on the hydrodynamic loads of the duct.

energy-saving duct  /  steering state  /  hydrodynamic load characteristics  /  numerical simulation
于鹏垚, 胡馨雨, 秦强, 韩兵兵, 蔡诗剑, 张浩松. 船舶操舵状态下桨前节能导管水动载荷特性研究. 船舶力学, 2026 , 30 (9) : 1473 -1482 . DOI: 10.3969/j.issn.1007-7294.2026.09.007
Peng-yao YU, Xin-yu HU, Qiang QIN, Bing-bing HAN, Shi-jian CAI, Hao-song ZHANG. Hydrodynamic load characteristics of a pre-propeller energy-saving duct under steering state[J]. Journal of Ship Mechanics, 2026 , 30 (9) : 1473 -1482 . DOI: 10.3969/j.issn.1007-7294.2026.09.007
Appendix
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Year 2026 volume 30 Issue 9
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Article Info
doi: 10.3969/j.issn.1007-7294.2026.09.007
  • Receive Date：2026-03-20
  • Online Date：2026-11-03
  • Published：2026-09-15
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  • Received：2026-03-20
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Affiliations
    1College of Naval Architecture and Ocean Engineering, Dalian Maritime University, Dalian 116026, China
    2Shanghai Key Laboratory of Ship Engineering, Shanghai 200011, China
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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
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Genus		 种数
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Percentage of total
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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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