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研究生:曾友燦
研究生(外文):Tseng,Yu-Tsan
論文名稱:波流共存場之透水式潛堤波浪特性研究
論文名稱(外文):An Experimental Study of Wave Characteristics Propagating with an Uniform Flow over a Permeable Submerged Breakwater
指導教授:黃材成黃材成引用關係
指導教授(外文):Huang,Chai-Cheng
學位類別:碩士
校院名稱:國立中山大學
系所名稱:海洋環境學系
學門:自然科學學門
學類:海洋科學學類
論文種類:學術論文
論文出版年:1998
畢業學年度:86
語文別:中文
論文頁數:78
中文關鍵詞:透水式潛堤
外文關鍵詞:Premeable Submerged Breakwater
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本研究針對一均勻流場中之規則前進波通過透水式潛堤的反射面波形、透過面波形、反射率、透過率及堤心內動態水壓進行實驗研究;同時此實驗的結果將提供驗證邊界元素法之數值結果的正確性。本文以微小振幅波理論線性疊加一同向均勻流場,探討此一波流場與透水式潛堤間之交互作用問題,而潛堤內部之多孔介質流場則以Sollitt&Cross所提出之"孔流運動方程式"作為控制方程式。由實驗值與數值解相互驗證,其結果相當吻合,顯示邊界元素數值計算法有相當之正確性。由研究結果可發現,波浪的週期越長,則反射率越大,而透過率越小;然堤心內部之動態水壓的變化會隨著波浪週期的減小而變小;本研究的結果可作為工程實務上的參考。

The aim of this study is to simulate the deformation of the waves with an uniform current passing through porous submerged breakwaters. The parameters such as reflection coefficient, transmission coefficient, and the dynamic water pressure at the center of submerged breakwaters, and the wave profiles at the reflected and transmitted interfaces are obtained by physical modeling in the hydrodynamic laboratory. Then, the experimental results was used to verify the numerical model which is based on the boundary element method (BEM). The small amplitude wave theory superposed an uniform current and combined with the governing equation of porous media fluid field developed by Sollitt&Cross were used to investigate the interaction between the passing waves and porous submerged breakwaters. The numerical solutions and the experimental results have good agreements. It shows that the longer the wave period, the greater the reflection coefficient; and the smaller the transmission coefficient. It shows that the dynamic water pressure at the center of the porous submerged breakwater will increase with the longer period of waves. These results may offer a design reference for practical engineers.

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