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題名 | 海岸區位以彈性構件吸收波能之柔性消波理論研究=Theoretical Study on Soft Sea Wave Breaker in the Coastal Zone Based on an Elastic Energy Absorbers |
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作者 | 楊瑞源; 黃煌煇; 伊格爾‧休爾干; 郭平巧; Yang, Ray-yeng; Hwung, Hwung-hweng; Shugan, Igor V.; Kuo, Ping-chiao; |
期刊 | 海洋工程學刊 |
出版日期 | 20110700 |
卷期 | 11:1 2011.07[民100.07] |
頁次 | 頁19-29 |
分類號 | 443.31 |
語文 | chi |
關鍵詞 | 二向藕合模式; 振盪雷諾數; 流體與構件壁質量比; 構件壁彈性特性參數; Two-way coupling model; Vibrational Reynolds number; Ratio for masses of the fluid and the wall; The characteristic elastic propertry of the wall; |
中文摘要 | 本研究係以理論分析探討新型彈性浮體構件並將其覆蓋於海岸區位俾成為一種柔性消波海岸工法,甚而可藉此軟性海岸防護工法進一步整合成波浪發電之海洋能源利用。理論分析模式之建置,乃將以二向藕合模式(two-way coupling model)用以求解二相介質(two-phase medium)“黏性流體-彈性構件”在波浪中之傳動運動過程的流體-結構之互制作用。一個包含處理N-S方程式之非壓縮黏性流體及針對彈性構件模擬之可變形平板運動方程的漸近線性模式將建立來分析大範圍控制參數之變動情形。不同雷諾數的消散關係將存有不同的振盪模態。流體-結構之互制影響將由兩個漸近極限例來詳盡探究,即彈性構件於表面波相對高及低的衝擊條件下,其波動之傳遞與消能變化。 |
英文摘要 | Wave propagation and attenuation due to elastic cover on the sea surface is considered to be soft shore protection system in this paper. In the two-way coupling model for wave motion in a two-phase medium, "viscous fluid-elastic shirt", accounting for the interaction between those phases is considered within the frame of a boundary layer-type approximation. An asymptotic linearized model, including the Navier-Stoke equations for a viscous incompressible fluid and the deformable plate motion equations for an elastic cover, is analyzed within a wide range of governing parameters. The dispersion relationship for different Reynolds numbers shows different oscillation regions. The structure of the fluid flow is studied in detail for the two asymptotic limiting cases of relatively high and low impact ranges of the elastic cover on the surface wave propagation and damping. |
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