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題名 | A High Order Panel Method for Practical Ship Waves Calculation=高階邊界元素法應用於船舶興波效應的計算 |
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作者 | 郭真祥; 何俊賢; 孫志彬; | 書刊名 | 中國造船暨輪機工程學刊 |
卷期 | 17:3 1998.08[民87.08] |
頁次 | 頁57-69 |
分類號 | 444.1 |
關鍵詞 | 船舶興波阻力; 高階邊界元素法; Ship wave resistance; High order panel method; |
語文 | 英文(English) |
中文摘要 | 本文以源流分佈以及高斯積分法則為基礎之高階邊界元素法來分析船舶興波效應 的問題。在船體幾何部份係將船體表面離散化成一定數目的小板,利用在小板上分佈高斯積 分點進一步解出所有高斯點處之源流強度。每一小板上的高斯階數可隨著船體表面形狀的複 雜度加以調整。在自由水面部份,每個自由水面小板配置點是著同一條流線上的點,並採用 Dawson的數學方法來處理自由水面興波效應的問題。文中以Wigley船、系列60船形、及 1100 TEU貨櫃船來作為理論計算的驗證分析。 |
英文摘要 | Based on the Rankine-source distribution associated with Gaussian quadrature, this paper presents a rovel high order panel method to solve ship-wave problems. The ship's surface is represented by a number of parametric panels on which the source densities are solved at Gaussian points without assuming the shape functions. In addition, the order of Gaussian approximation can be arbitrarily selected, allowing the proposed method to be easily applied to a relatively complicated ship geometrical configuration. On the free-surface, a number of particular panels are generated to the extent that the collocation points lie on the streamlines. Furthermore, a four-point, upstream, finite difference algorithm is employed on the basis of Dawson's method to treat the linearized free surface condition. Also presented herein are, for validation purposes, computational results obtained from several ships such as the Wigley hull form, a Series 60 hull and a 1100 TEU container. |
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