查詢結果分析
來源資料
頁籤選單縮合
題 名 | 應用三維影像量測技術探討波流作用下之箱網網袋變形=Experimental Study on the Deformation of Cage under Wave-Current Action by Applying 3-D Imagine Technique |
---|---|
作 者 | 陳陽益; 楊炳達; 陳彥廷; | 書刊名 | 海洋工程學刊 |
卷 期 | 15:1 2015.03[民104.03] |
頁 次 | 頁17-35 |
分類號 | 439.3 |
關鍵詞 | 波流交互作用; 箱網; 網袋容積率; 三維影像; Wave-current interaction; Cage net; Volume reduction coefficient; 3-D image; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究針對單口及雙口可沉式箱網模型系統,對其受流、波、波+同向流及波+反向流等狀況作用進行試驗,運用3d影像系統分析法計算箱網網袋體積,可更接近真實網袋變形的狀況。試驗結果顯示,流對箱網網袋變形的影響明顯大於波浪,網袋最大變形約發生在波谷通過箱網時,波流同向造成的網袋變形大於波流反向之狀況。雙口箱網的試驗顯示,下游箱網會受到上游箱網遮蔽,網袋變形會趨緩。沉式箱網主要功能為降低波浪的影響,在本試驗條件下,可將波浪對箱網網袋變形的影響降低一半。由纜繩張力分析可知,波流同向造成的張力大於波流反向,僅有波浪作用者張力最小;沉式箱網除可降低網袋變形,亦會減少纜繩張力。本研究提出箱網網袋受波流作用下的三維變形量測分析技術,可供未來進行相關研究者依循,試驗所得結果亦可供箱網數值模式進行驗證。 |
英文摘要 | This study does some experiments on single and dual net-cage system, which are affected by current, waves, wave-cocurrent, and wave-countcurrent. A nonintrusive stereo imaging measurement of the 3-D net geometry is established by tracing the positions of LED markers on the net in a laboratory experiment. Experiment results show that the deformation of the net caused by current is significantly larger than that caused by waves. The maximum deformation of the net occurs when trough passes through the cage. Wave-cocurrent leads greater deformation of the net than wave-countcurrent. For the dual net-cage test, the effect on the deformation tends to abate as the downstream net cage is shielded by the upstream net cage. The sinking net cage is designed for decreasing the impact of waves, and the deformation of net is reduced by half in this case. The analysis indicates that the mooring tension resulted from the wave-cocurrent is more significant than that resulted from wavecountcurrent. The sinking net cage can not only lessen the deformation of net but also moderate the mooring tension. |
本系統中英文摘要資訊取自各篇刊載內容。