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頁籤選單縮合
題名 | 孤立波在直立壁上之反射試驗=Experiments on Reflection of Solitary Waves at a Vertical Wall |
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作者姓名(中文) | 陳陽益; 楊景涵; 許弘莒; | 書刊名 | 海洋工程學刊 |
卷期 | 14:1 2014.03[民103.03] |
頁次 | 頁1-13 |
分類號 | 443.31 |
關鍵詞 | 孤立波; 反射; 最大溯升; 對撞; 殘留時間; 相位偏移; Solitary wave; Reflection; Maximal run-up; Residence time; Phase shift; Residual falling jet; |
語文 | 中文(Chinese) |
中文摘要 | 本研究以實驗方式在一斷面水槽中,以高速攝影機拍攝孤立波經一光滑直立壁反射之運動行為,事先於水槽中放置一網格版,將網格版影像拍攝儲存,藉由影像處理方式將像素座標轉換成真實座標。之後造一孤立波讓其經直立壁反射,即可將拍攝之波形影像與網格面重疊,得到波形變化的真實座標。試驗結果將幾個重要參數在不同相對波高(入射波高對平靜水深之比)下作一量化處理,如孤立波撞擊直立壁之最大溯升、殘留時間、相位偏移等。其試驗結果與理論解析、數值模式等做一比對討論,並將前人實驗不足之處加以修正,另外,本文也將本實驗結果與Chambarel et. al.(2009)所發表的"residual falling jet"新現象作一討論比較。 |
英文摘要 | Theoretical analysis and numerical model were utilized by the early researches to observe the collision or reflection of the solitary waves. It is difficult to use the experimental technique to capture the wave profile and the deduced effects as the collision or reflection of two solitary waves often occurred within a short time. In this study, the experiment is designed by utilizing a high speed camera. Excellent consistencies between the generated solitary wave and Boussinesq's theoretical solution correct to first order indicate that our method is within an acceptable accuracy. For validation, comparison with the previous studies was used, including theoretical investigation and numerical simulation. Furthermore, the new phenomenon called residual falling jet proposed by the previous study is also confirmed by our experimental results. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。