碩士 / 國防大學理工學院 / 造船及海洋工程碩士班 / 98 / The hull form design is strongly associated with the fuel consumption, stability, stealth and voyage safety problems of the submarine. A submarine moving under the free surface always experiences the fluid dynamic forces and shows the six degree of motion. The dynamic behavior of the vessel is closely related to hull geometry. Therefore, so far as design issue is concerned, the optimum hull form design could reduce the form drag and enhance the propulsion efficiency so as to improve the stealth capability and alleviate structure fatigue of the submarine. This study will focus on the relationship between the hull geometry of the submarine and its sailing resistance. Actually, except the geometric factor, the cruise speed and sailing depth may also have considerable contribution on estimates of resistance. In order to investigate these influence factors on the sailing resistance of the submarine, the CFD and Dynamic Moving Mesh Technique have been applied in this study. The computational domain is composed of unstructured triangular-typed meshes with moving mesh capability based on the mesh regeneration and interpolation techniques. Meanwhile, a well-valid turbulence model with wall function treatment for the vicinity of body surface is employed to fulfill the submarine flow computations and to calculate the fluid dynamics around the submarine. The computation of the sailing resistance includes wave-making resistance, form drag and friction resistance in this research. This achievement provides not only the data regarding the submarine resistance computation for the academic, but also the reference for the military technology research and development of submarine.
| Identifer | oai:union.ndltd.org:TW/098CCIT0345001 |
| Date | January 2010 |
| Creators | Chia-Yi,Lin, 林佳儀 |
| Contributors | 劉宗龍 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 76 |
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