Full
Outline
For the frequency domain hydrodynamic problems of ship sailing in waves, the influence of steady wave potential and waterline integral terms on ship hydrodynamic calculation is explored. The boundary integral equation is solved using the three-dimensional translating and pulsating (3DTP) source Green's function method, and the background flow field is linearized using two schemes: double-body (DB) flow and Neumann-Kelvin (NK) uniform flow. A numerical program is developed and hydrodynamic calculations on Wigley I, Wigley III, S60, and S175 ships are performed. The results show that taking into account the steady potential can significantly improve the calculation accuracy of ship motion response on the resonance band of frequency. In addition, directly adding the waterline integral term to the boundary integral equation can easily lead to unstable numerical results. When the waterline is sunk to the centroid of the adjacent panel, the numerical results converge and are generally consistent with the results when the waterline integral is neglected, From an engineering perspective, in the 3DTP method, considering the influence of steady potential enhances the accuracy of the results, whereas neglecting the waterline integral is more practical.
5
2
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
