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Diffraction force calculation using three-dimensional time-domain Green function method
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Jiang LU1, Nan ZHANG1, Xin-shu ZHANG2, Min GU1
Journal of Ship Mechanics | 2024, 28(7) : 981 - 994
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Journal of Ship Mechanics | 2024, 28(7): 981-994
• Hydrodynamics •
Diffraction force calculation using three-dimensional time-domain Green function method
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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: 2024-07-20 doi: 10.3969/j.issn.1007-7294.2024.07.002
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The development of the potential flow solver for the CAE software of a ship requests a reliable method to solve the potential flow. The numerical method of the diffraction force with a three-dimensional time-domain panel method was studied. With a three-dimensional time-domain Green function introduced, its Rankine part was calculated by Hess & Smith’s method while its free-surface memory part was calculated by the method of Beck team from the University of Michigan, followed by the derivation of the diffraction impulse function in the mathematical expressions for making the program. Then the source method was used to calculate the source and the diffraction potential, and the diffraction potential force was obtained by integrating the pressure around the floating body. Finally, the diffraction force and Froude-Krylov force were calculated with the Wigley I ship. The verification was carried out by comparing the results with the published experimental and numerical results. The method and the code in this paper are reliable for developing the potential flow solver of the CAE software and predicting the nonlinear stability failure models in waves.

time-domain panel method  /  three-dimensional time-domain Green function  /  diffraction force  /  CAE software of the ship
Jiang LU, Nan ZHANG, Xin-shu ZHANG, Min GU. Diffraction force calculation using three-dimensional time-domain Green function method[J]. Journal of Ship Mechanics, 2024 , 28 (7) : 981 -994 . DOI: 10.3969/j.issn.1007-7294.2024.07.002
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Article Info
doi: 10.3969/j.issn.1007-7294.2024.07.002
  • Receive Date：2024-01-15
  • Online Date：2026-03-26
  • Published：2024-07-20
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  • Received：2024-01-15
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Affiliations
    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
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
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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