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Method of three-dimensional time-domain Green function for ships at forward speed
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Jiang LU1, Nan ZHANG1, Xin-shu ZHANG2, Min GU1
Journal of Ship Mechanics | 2024, 28(1) : 20 - 35
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Journal of Ship Mechanics | 2024, 28(1): 20-35
• Hydrodynamics •
Method of three-dimensional time-domain Green function for ships at forward speed
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Jiang LU1, Nan ZHANG1, Xin-shu ZHANG2, Min GU1
Affiliations
  • 1.China Ship Scientific Research Center, Wuxi 214082, China
  • 2.State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Published: 2024-01-20 doi: 10.3969/j.issn.1007-7294.2024.01.003
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Developing a reliable potential flow solver is necessary for the ship CAE software. The method on the three-dimensional time-domain Green function of ships with forward speed in infinite depth was studied. Firstly, a three-dimensional transient free-surface Green function was introduced, and its Rankine part was calculated by Hess & Smith’s method, and its free-surface memory part was calculated by the method of Beck team from the University of Michigan, US. Secondly, the memory part of the Green function and its derivatives were obtained in the mathematical expressions for making the program in five regions. Thirdly, the source method was used to calculate the source and the radiation potential, and then the radiation force was obtained by integrating the pressure around the floating body. Finally, the radiation force of the Wigley I ship was calculated, and compared with the published experimental and numerical results. The reliability of the method and the code in this paper is confirmed.

three-dimensional transient free-surface Green function  /  radiation force  /  ship CAE software
Jiang LU, Nan ZHANG, Xin-shu ZHANG, Min GU. Method of three-dimensional time-domain Green function for ships at forward speed[J]. Journal of Ship Mechanics, 2024 , 28 (1) : 20 -35 . DOI: 10.3969/j.issn.1007-7294.2024.01.003
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Year 2024 volume 28 Issue 1
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Article Info
doi: 10.3969/j.issn.1007-7294.2024.01.003
  • Receive Date：2023-07-22
  • Online Date：2026-03-21
  • Published：2024-01-20
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  • Received：2023-07-22
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    1.China Ship Scientific Research Center, Wuxi 214082, China
    2.State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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表12种不同金属材料的力学参数
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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
Number of
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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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