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題名 | 孤立波與完全浸沒或非完全浸沒之直立圓柱互制研究=Study on the Interaction between Solitary Wave and Fully/Partially Submerged Vertical Circular Cylinder |
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作者 | 張志華; | 書刊名 | 海洋工程學刊 |
卷期 | 17:1 2017.03[民106.03] |
頁次 | 頁21-42 |
分類號 | 351.99 |
關鍵詞 | 孤立波; 浸沒直立圓柱; 完全非線性波; 三維波; Solitary wave; Submerged circular cylinder; Fully-nonlinear wave; Three-dimensional wave; |
語文 | 中文(Chinese) |
中文摘要 | 圓柱浮體是常見的海工結構物立柱設施。本文主要發展非線性波模式用於分析孤立波與圓柱結構物互制之現象。本研究發展垂直面貼壁格網結合水平面卡氏坐標基於勢能流之三維完全非線性波動模式。模式發展自動偵測不規則邊界的技巧,計算孤立波經過直立圓柱浸沒不等水深之繞射情況。計算模式與他人的實驗結果印證比較可得合理的結果。計算結果分析以無因次量(以靜水深為參考長度)之孤立波高A_0 = 0.3經過圓柱直徑D = 4為例,分析全浸沒深度H_S = 1.0與浸沒水深H_S = 0.7、0.5的情形討論其差異,分析內容包含水位、流場及圓柱面前後溯升高度之比較。 |
英文摘要 | Vertical circular cylinders are frequently established ocean structures. The theme of this article is to develop a three-dimensional fully-nonlinear-wave model to analyze the interaction of a wave versus a structure. This model is developed using a boundary-fitted grid and a Cartesian grid. An automatic detecting-boundary code is constructed to determine the irregular objects. The numerical results are consistent with others' experimental data. The typical cases for the incident wave with a height of A_0= 0.3 and the vertical piercing circular cylinder of diameter D = 4 (based on the reference length of still water depth) with submerged depth H_s = 1.0, 0.7 and 0.5 are computed. Several phenomenon including free-surface displacement, flow field, and the runup on the cylinder are also discussed. |
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